@book {chen2024applications, title = {Applications Of X-ray Techniques To Nanomaterials For Energy Research}, year = {2024}, note = {n/a}, publisher = {World Scientific Publishing Company}, organization = {World Scientific Publishing Company}, abstract = {n/a}, isbn = {9789811284656}, url = {https://books.google.com.tw/books?id=1pn7EAAAQBAJ}, author = {Chen, L. and Chen, W.} } @inbook {4594, title = {Applications of X-ray Spectroscopy in Carbon Dioxide Reduction}, booktitle = {Applications of X-ray Techniques to Nanomaterials for Energy Research}, series = {World Scientific Series in Nanoscience and Nanotechnology}, volume = {Volume 24}, year = {2023}, note = {

doi:10.1142/9789811284649_0005

}, month = {2023/08/30}, pages = {155-186}, publisher = {WORLD SCIENTIFIC}, organization = {WORLD SCIENTIFIC}, abstract = {

The following sections are included: Introduction XAS for CO2 Reduction Electrochemical CO2 Reduction Photochemical CO2 Reduction Summary and Proposed Research Prospects Acknowledgments ReferencesThe following sections are included: Introduction XAS for CO2 Reduction Electrochemical CO2 Reduction Photochemical CO2 Reduction Summary and Proposed Research Prospects Acknowledgments References

}, isbn = {978-981-12-8463-2}, url = {https://doi.org/10.1142/9789811284649_0005}, author = {Indrajit Shown and Wei-Fu Chen and Kuei-Hsien Chen and Li-Chyong Chen} } @proceedings {1484, title = {Methylamine growth of SiCN films using ECR-CVD}, journal = {Mat. Res. Soc. Symp.}, year = {2000}, pages = {606, 115-120}, author = {C.Y. Wen and J.J. Wu and H.J. Lo and L. C. Chen and K. H. Chen and S.T. Lin and Y.-C. Yu and C.-W. Wang and E.-K. Lin} } @proceedings {1468, title = {Enhancement in Field Emission of Silicon Micro-tips by Bias-assisted Carburization}, journal = {the Appl. Diamond Conference and Frontier Carbon Tech. Joint Conference 1999}, year = {1999}, pages = {353-358}, address = {Tsukuba, Japan}, author = {P. D. Kichambare and F. G. Tarntair and T.Y. Wang and L. C. Chen and K. H. Chen and H. C. Cheng} } @proceedings {1226, title = {Silicon-containing Crystalline Carbon Nitride: a Novel Wide Band Gap Material}, journal = {the symposium on Light Emitting Devices for Optoelectronic Applications, Electrochemical Society}, year = {1998}, pages = {Vol 98-2, 417-433}, author = {K. H. Chen and D. M. Bhusari and J.J. Wu and S.L. Wei and R.L. Liu and L. C. Chen} } @proceedings {1218, title = {Growth of Ternary Silicon Carbon Nitride as a New Wide Band Gap Material}, journal = {MRS Symp.}, year = {1997}, pages = {Vol. 468, 31}, author = {L. C. Chen and C.K. Chen and D. M. Bhusari and K. H. Chen and S.L. Wei and Y.F. Chen and Y.C. Jong and D.Y. Lin and C.F. Li and Y.S. Huang} } @proceedings {1209, title = {GaN Growth by Nitrogen ECR-CVD Method}, journal = {MRS Symp. }, year = {1996}, pages = {Vol. 423 , 377}, author = {K. H. Chen and C.H. Chao and T. J. Chuang} } @proceedings {1208, title = {On the Optimized Nucleation of Near-Single-Crystal CVD Diamond Film}, journal = {MRS Symp.}, year = {1996}, pages = {Vol.416, 81 }, author = {L. C. Chen and C.C. Juan and J.Y. Wu and K. H. Chen and J. W. Teng} } @proceedings {1205, title = {Epitaxial Growth of Diamond Films for Electronic Applications}, journal = {the 188th Meeting of the Electrochemical Society}, year = {1995}, pages = {Vol 95-21, p55-69}, address = {Chicago}, author = {K. H. Chen and J.Y. Wu and L. C. Chen and C.C. Juan and T. Hsu} } @proceedings {1195, title = {Energy Llocalization in Infrared Multiphoton Excited CF2Cl2 Studied by Time Resolved Raman Spectroscopy}, journal = {Int. Conf. Quantum Electronics}, year = {1988}, pages = {496}, publisher = {Tech. Digest}, address = {Tokyo Japan}, author = {J. Wang, K.H. Chen, E. Mazur} } @proceedings {1192, title = {The Interaction of Infrared Radiation with Isolated Molecules: intramolecular nonequilibrium}, journal = {Int. Conf. on Lasers 6}, year = {1986}, pages = {359}, address = {Orlando}, author = {E. Mazur and K. H. Chen and J. Wang} } @proceedings {1191, title = {Raman Spectroscopy of Infrared Multiphoton Excited Molecules}, journal = {Int. Quantum Electronics Conf.}, year = {1986}, address = {San Francisco}, author = {K. H. Chen and J. Wang and E. Mazur} } @article {4593, title = {Boosting Thermoelectric Performance in Nanocrystalline Ternary Skutterudite Thin Films through Metallic CoTe2 Integration}, journal = {ACS Applied Materials \& InterfacesACS Applied Materials \& Interfaces}, volume = {16}, year = {2024}, note = {

doi: 10.1021/acsami.3c17695

}, month = {2024}, pages = {14770 - 14780}, publisher = {American Chemical Society}, abstract = {n/a}, isbn = {1944-8244}, url = {https://doi.org/10.1021/acsami.3c17695}, author = {Jarwal, Bhawna and Suman Abbas and Chou, Ta-Lei and Vailyaveettil, Suneesh M. and Kumar, Ashutosh and Quadir, Shaham and Ho, Thi-Thong and Deniz P. Wong and Li-Chyong Chen and Kuei-Hsien Chen} } @article {4598, title = {Constructing B-N-P Bonds in Ultrathin Holey g-C3N4 for Regulating the Local Chemical Environment in Photocatalytic CO2 Reduction to CO}, journal = {Small}, volume = {n/a}, year = {2024}, note = {

n/a

}, month = {2024}, pages = {2400724}, publisher = {John Wiley \& Sons, Ltd}, abstract = {

Abstract The lack of intrinsic active sites for photocatalytic CO2 reduction reaction (CO2RR) and fast recombination rate of charge carriers are the main obstacles to achieving high photocatalytic activity. In this work, a novel phosphorus and boron binary-doped graphitic carbon nitride, highly porous material that exhibits powerful photocatalytic CO2 reduction activity, specifically toward selective CO generation, is disclosed. The coexistence of Lewis-acidic and Lewis-basic sites plays a key role in tuning the electronic structure, promoting charge distribution, extending light-harvesting ability, and promoting dissociation of excitons into active carriers. Porosity and dual dopants create local chemical environments that activate the pyridinic nitrogen atom between the phosphorus and boron atoms on the exposed surface, enabling it to function as an active site for CO2RR. The P?N?B triad is found to lower the activation barrier for reduction of CO2 by stabilizing the COOH reaction intermediate and altering the rate-determining step. As a result, CO yield increased to 22.45~{\textmu}mol~g?1~h?1 under visible light irradiation, which is ≈12 times larger than that of pristine graphitic carbon nitride. This study provides insights into the mechanism of charge carrier dynamics and active site determination, contributing to the understanding of the photocatalytic CO2RR mechanism.

}, keywords = {CO2 reduction, Exciton dissociation, Graphitic carbon nitride, metal-free, Photocatalysis, reaction mechanism}, isbn = {1613-6810}, url = {https://doi.org/10.1002/smll.202400724}, author = {Kamal Hussien, Mahmoud and Sabbah, Amr and Mohammad Qorbani and Putikam, Raghunath and Kholimatussadiah, Septia and Tzou, Der-Lii M. and Hammad Elsayed, Mohamed and Lu, Yu-Jung and Wang, Yen-Yu and Lee, Xing-Hao and Lin, Tsai-Yu and Thang, Nguyen Quoc and Heng-Liang Wu and Haw, Shu-Chih and Wu, Kevin C.-W. and Lin, Ming-Chang and Kuei-Hsien Chen and Li-Chyong Chen} } @article {4592, title = {Hybrid and Asymmetric Supercapacitors: Achieving Balanced Stored Charge across Electrode Materials}, journal = {Small}, volume = {n/a}, year = {2024}, note = {

n/a

}, month = {2024}, pages = {2400558}, publisher = {John Wiley \& Sons, Ltd}, abstract = {

Abstract An electrochemical capacitor configuration extends its operational potential window by leveraging diverse charge storage mechanisms on the positive and negative electrodes. Beyond harnessing capacitive, pseudocapacitive, or Faradaic energy storage mechanisms and enhancing electrochemical performance at high rates, achieving a balance of stored charge across electrodes poses a significant challenge over a wide range of charge?discharge currents or sweep rates. Consequently, fabricating hybrid and asymmetric supercapacitors demands precise electrochemical evaluations of electrode materials and the development of a reliable methodology. This work provides an overview of fundamental aspects related to charge-storage mechanisms and electrochemical methods, aiming to discern the contribution of each process. Subsequently, the electrochemical properties, including the working potential windows, rate capability profiles, and stabilities, of various families of electrode materials are explored. It is then demonstrated, how charge balancing between electrodes falters across a broad range of charge?discharge currents or sweep rates. Finally, a methodology for achieving charge balance in hybrid and asymmetric supercapacitors is proposed, outlining multiple conditions dependent on loaded mass and charge?discharge current. Two step-by-step tutorials and model examples for applying this methodology are also provided. The proposed methodology is anticipated to stimulate continued dialogue among researchers, fostering advancements in achieving stable and high-performance supercapacitor devices.

}, keywords = {charge balancing, charge{\textendash}discharge current density, electrochemical capacitor, hybrid and asymmetric device, rate capability, SUPERCAPACITOR, sweep rate}, isbn = {1613-6810}, url = {https://doi.org/10.1002/smll.202400558}, author = {Mohammad Qorbani and Kuei-Hsien Chen and Li-Chyong Chen} } @article {4568, title = {Overcoming small-bandgap charge recombination in visible and NIR-light-driven hydrogen evolution by engineering the polymer photocatalyst structure}, journal = {Nature Communications}, volume = {15}, year = {2024}, note = {

n/a

}, month = {2024}, pages = {707}, abstract = {

Designing an organic polymer photocatalyst for efficient hydrogen evolution with visible and near-infrared (NIR) light activity is still a major challenge. Unlike the common behavior of gradually increasing the charge recombination while shrinking the bandgap, we present here a series of polymer nanoparticles (Pdots) based on ITIC and BTIC units with different π-linkers between the acceptor-donor-acceptor (A-D-A) repeated moieties of the polymer. These polymers act as an efficient single polymer photocatalyst for H2 evolution under both visible and NIR light, without combining or hybridizing with other materials. Importantly, the difluorothiophene (ThF) π-linker facilitates the charge transfer between acceptors of different repeated moieties (A-D-A-(π-Linker)-A-D-A), leading to the enhancement of charge separation between D and A. As a result, the PITIC-ThF Pdots exhibit superior hydrogen evolution rates of 279 {\textmu}mol/h and 20.5 {\textmu}mol/h with visible (\>420 nm) and NIR (\>780 nm) light irradiation, respectively. Furthermore, PITIC-ThF Pdots exhibit a promising apparent quantum yield (AQY) at 700 nm (4.76\%).

}, isbn = {2041-1723}, url = {https://doi.org/10.1038/s41467-024-45085-6}, author = {Hammad Elsayed, Mohamed and Abdellah, Mohamed and Alhakemy, Ahmed Zaki and Mekhemer, Islam M. A. and Aboubakr, Ahmed Esmail A. and Chen, Bo-Han and Sabbah, Amr and Lin, Kun-Han and Chiu, Wen-Sheng and Lin, Sheng-Jie and Chu, Che-Yi and Lu, Chih-Hsuan and Yang, Shang-Da and Mohamed, Mohamed Gamal and Kuo, Shiao-Wei and Hung, Chen-Hsiung and Li-Chyong Chen and Kuei-Hsien Chen and Chou, Ho-Hsiu} } @article {4569, title = {Synergistic Electronic Interaction of Nitrogen Coordinated Fe-Sn Double-Atom Sites: An Efficient Electrocatalyst for Oxygen Reduction Reaction}, journal = {Small Methods}, volume = {n/a}, year = {2024}, note = {

n/a

}, month = {2024}, pages = {2301674}, publisher = {John Wiley \& Sons, Ltd}, abstract = {

Abstract Double-atom site catalysts (DASs) have emerged as a recent trend in the oxygen reduction reaction (ORR), thereby modifying the intermediate adsorption energies and increasing the activity. However, the lack of an efficient dual atom site to improve activity and durability has limited these catalysts from widespread application. Herein, the nitrogen-coordinated iron and tin-based DASs (Fe-Sn-N/C) catalyst are synthesized for ORR. This catalyst has a high activity with ORR half-wave potentials (E1/2) of 0.92~V in alkaline, which is higher than those of the state-of-the-art Pt/C (E1/2~=~0.83~V), Fe-N/C (E1/2~=~0.83~V), and Sn-N/C (E1/2~=~0.77~V). Scanning electron transmission microscopy analysis confirmed the atomically distributed Fe and Sn sites on the N-doped carbon network. X-ray absorption spectroscopy analysis revealed the charge transfer between Fe and Sn. Both experimental and theoretical results indicate that the Sn with Fe-NC (Fe-Sn-N/C) induces charge redistribution, weakening the binding strength of oxygenated intermediates and leading to improved ORR activity. This study provides the synergistic effects of DASs catalysts and addresses the impacts of P-block elements on d-block transition metals in ORR.

}, keywords = {d-block metal, Double-atom sites, Fe-Sn-N/C, oxygen reduction, P-block metal}, isbn = {2366-9608}, url = {https://doi.org/10.1002/smtd.202301674}, author = {Krishnamoorthy, Vimal and Sabhapathy, Palani and Raghunath, Puttikam and Huang,Chih-Yang and Sabbah, Amr and Kamal Hussien, Mahmoud and Syum, Zeru and Muthusamy, Saravanakumar and Lin, Ming-Chang and Heng-Liang Wu and Ruei-San Chen and Kuei-Hsien Chen and Li-Chyong Chen} } @article {4542, title = {Axial Chlorine Induced Electron Delocalization in Atomically Dispersed FeN4 Electrocatalyst for Oxygen Reduction Reaction with Improved Hydrogen Peroxide Tolerance}, journal = {Small}, year = {2023}, note = {

https://doi.org/10.1002/smll.202303598

}, month = {2023}, pages = {2303598}, publisher = {John Wiley \& Sons, Ltd}, abstract = {

Abstract Atomically dispersed iron sites on nitrogen-doped carbon (Fe-NC) are the most active Pt-group-metal-free catalysts for oxygen reduction reaction (ORR). However, due to oxidative corrosion and the Fenton reaction, Fe-NC catalysts are insufficiently active and stable. Herein, w e demonstrated that the axial Cl-modified Fe-NC (Cl-Fe-NC) electrocatalyst is active and stable for the ORR in acidic conditions with high H2O2 tolerance. The Cl-Fe-NC exhibits excellent ORR activity, with a high half-wave potential (E1/2) of 0.82~V versus a reversible hydrogen electrode (RHE), comparable to Pt/C (E1/2 = 0.85~V versus RHE) and better than Fe-NC (E1/2 = 0.79~V versus RHE). X-ray absorption spectroscopy analysis confirms that chlorine is axially integrated into the FeN4. More interestingly, compared to Fe-NC, the Fenton reaction is markedly suppressed in Cl-Fe-NC. In situ electrochemical impedance spectroscopy reveals that Cl-Fe-NC provides efficient electron transfer and faster reaction kinetics than Fe-NC. Density functional theory calculations reveal that incorporating Cl into FeN4 can drive the electron density delocalization of the FeN4 site, leading to a moderate adsorption free energy of OH* (?GOH*), d-band center, and a high onset potential, and promotes the direct four-electron-transfer ORR with weak H2O2 binding ability compared to Cl-free FeN4, indicating superior intrinsic ORR activity.

}, keywords = {Cl coordination, d-band center, electron density, FeN4, Fenton reaction, oxygen reduction reaction}, isbn = {1613-6810}, url = {https://doi.org/10.1002/smll.202303598}, author = {Sabhapathy, Palani and Raghunath, Puttikam and Sabbah, Amr and Indrajit Shown and Bayikadi, Khasim Saheb and Xie, Rui-Kun and Krishnamoorthy, Vimal and Lin, Ming-Chang and Kuei-Hsien Chen and Li-Chyong Chen} } @article {4525, title = {Enhancing the lithium-ion storage capability of Cu2ZnSnS4 anodes via a nitrogen-doped conductive support}, journal = {Chemical Engineering Journal}, volume = {465}, year = {2023}, note = {

n/a

}, month = {2023}, pages = {142786}, abstract = {

Achieving lithium-ion batteries with both excellent electrochemical performance and cycling stability is a top priority for their real-world applications. This work reports high-performance and stable Cu2ZnSnS4 (CZTS) anode materials encapsulated by nitrogen-doped carbon (CZTS@N-C) for advanced lithium-ion battery application. Ex-situ X-ray photoelectron spectroscopy and transmission electron microscopy revealed that the nitrogen-doped carbon network features a more conducive solid-electrolyte interphase that enables lower charge-transfer resistance and fast Li+ diffusion kinetics with negligible initial irreversible capacity loss. As a result, the CZTS@N-C electrode delivers a significantly enhanced capacity of 710 mAh g-1 with 73\% capacity retention after 220 cycles at a current rate of 0.5 mA g-1 and superior rate performance compared to that of unmodified CZTS. Additionally, the study sheds light on the fast lithiation dynamics chemistry of CZTS@N-C through kinetics analysis, explored by in-situ Raman, ex-situ X-ray absorption, and in-situ electrochemical impedance. This study provides a new approach for fabricating high-performance, durable conductive polymer-encapsulated low-cost transition-metal-sulfide anode materials.

}, keywords = {Conductive support, Lithium-ion battery, polyaniline (PANI) modify CZTS, RAMAN, XAS}, isbn = {1385-8947}, url = {https://www.sciencedirect.com/science/article/pii/S1385894723015176}, author = {Syum, Zeru and Tadesse Billo and Sabbah, Amr and Anbalagan, Aswin kumar and Quadir, Shaham and Hailemariam, Adane Gebresilassie and Sabhapathy, Palani and Chih-Hao Lee and Heng-Liang Wu and Li-Chyong Chen and Kuei-Hsien Chen} } @article {4541, title = {Mimicking Metalloenzyme Microenvironments in the Transition Metal-Single Atom Catalysts for Electrochemical Hydrogen Peroxide Synthesis in an Acidic Medium}, journal = {Small Methods}, year = {2023}, note = {

https://doi.org/10.1002/smtd.202300234

}, month = {2023}, pages = {2300234}, publisher = {John Wiley \& Sons, Ltd}, abstract = {

Abstract Electrochemical reduction of oxygen into hydrogen peroxide in an acidic medium offers an energy-efficient and green H2O2 synthesis as an alternative to the energy-intensive anthraquinone process. Unfortunately, high overpotential, low production rates, and fierce competition from traditional four-electron reduction limit it. In this study, a metalloenzyme-like active structure is mimicked in carbon-based single-atom electrocatalysts for oxygen reduction to H2O2. Using a carbonization strategy, the primary electronic structure of the metal center with nitrogen and oxygen coordination is modulated, followed by epoxy oxygen functionalities close to the metal active sites. In an acidic medium, CoNOC active structures proceed with greater than 98\% H2O2 selectivity (2e?/2H+) rather than CoNC active sites that are selective to H2O (4e?/4H+). Among all MNOC (M~=~Fe, Co, Mn, and Ni) single-atom electrocatalysts, the CoNOC is the most selective (\> 98\%) for H2O2 production, with a mass activity of 10~A~g?1 at 0.60~V vs. RHE. X-ray absorption spectroscopy is used to identify the formation of unsymmetrical MNOC active structures. Experimental results are also compared to density functional theory calculations, which revealed that the structure-activity relationship of the epoxy-surrounded CoNOC active structure reaches optimum (?G*OOH) binding energies for high selectivity.

}, keywords = {d-band center, Electrocatalysis, electrochemical H2O2 production, electronic structures, oxygen reduction reaction, single-atom catalysts}, isbn = {2366-9608}, url = {https://doi.org/10.1002/smtd.202300234}, author = {Muthusamy, Saravanakumar and Sabhapathy, Palani and Putikam Raghunath and Sabbah, Amr and Chang, Yu-Chung and Krishnamoorthy, Vimal and Ho, Thi-Thong and Chiou, Jau-Wern and Lin, Ming-Chang and Li-Chyong Chen and Kuei-Hsien Chen} } @article {4556, title = {Modification of Conductive Carbon with N-Coordinated Fe-Co Dual-Metal Sites for Oxygen Reduction Reaction}, journal = {ChemElectroChem}, volume = {n/a}, year = {2023}, note = {

n/a

}, month = {2023}, pages = {e202300272}, publisher = {John Wiley \& Sons, Ltd}, abstract = {

Abstract Earth-abundant commercial conductive carbon materials are ideal electrocatalyst supports but cannot be directly utilized for single-atom catalysts owing to the lack of anchoring sites. Therefore, we employed crosslink polymerization to modify the conductive carbon surface with Fe?Co dual-site electrocatalysts for oxygen reduction reaction (ORR). First, metal-coordinated polyurea (PU) aerogels were prepared using via crosslinked polymerization at ambient temperature. Then, carbon-supported, atomically dispersed Fe?Co dual-atom sites (FeCoNC/BP) were formed by high-temperatures pyrolysis with a nitrogen source. FTIR and 13C NMR measurements showed PU linkages, while 15N NMR revealed metal?nitrogen coordination in the PU gels. Asymmetric, N-coordinated, and isolated Fe?Co active structures were found after pyrolysis using XAS and STEM. In alkaline media, FeCoNC/BP exhibited excellent ORR activity, with a E1/2 of 0.93?V vs. RHE, higher than that of Pt/C (20?\%) (0.90?V), FeNC/BP (0.88?V), and CoNC/BP (0.85?V). An accelerated durability test (ADT) on FeCoNC/BP indicated good durability over 35000 cycles. FeCoNC/BP also showed moderate ORR and ADT performance in acidic media. The macro/mesoporous N-doped carbon structures enhanced the mass transport properties of the dual Fe?Co active-sites. Therefore, modifying carbon supports with nonprecious metal catalysts may be a cost-effective-strategy for sustained electrochemical energy conversion.

}, keywords = {conductive carbon, dual metal-atom catalysts, Electrocatalysis, oxygen reduction, polyurea aerogels}, isbn = {2196-0216}, url = {https://doi.org/10.1002/celc.202300272}, author = {Muthusamy, Saravanakumar and Sabbah, Amr and Sabhapathy, Palani and Chang, Yu-Chung and Tadesse Billo and Syum, Zeru and Li-Chyong Chen and Kuei-Hsien Chen} } @article {4527, title = {Numerous defects induced by exfoliation of boron-doped g-C3N4 towards active sites modulation for highly efficient solar-to-fuel conversion}, journal = {Materials Today Sustainability}, volume = {22}, year = {2023}, note = {

n/a

}, month = {2023}, pages = {100359}, abstract = {

Graphitic carbon nitride (CN) has emerged as a highly promising material in the photocatalysis field. However, its bulk structure suffers from a lack of active sites, limiting its practical application. Herein, a boron-doped CN (BCN) was prepared by a green gas-blowing-assisted thermal polymerization and then subjected to different exfoliation processes in order to delaminate the layered structure and tune the surface-active sites. A thorough comparative study shows that thermal exfoliation creates unsaturated nitrogen sites and induces the formation of interconnected layers that act as an electron diffusion channel for better charge transport. Furthermore, the thermally exfoliated BCN is rich in structural disorders that serve as dissociation defects for photoinduced charge carriers with a low exciton binding energy of 27~meV. Experimental results supported by theoretical calculations show that the nitrogen adjacent to boron is activated by the surrounding surface amino groups and the perforated texture to serve as an active adsorption site towards CO2 and H2O. Consequently, the exfoliated BCN acts as an outstanding bifunctional photocatalyst towards CO2 reduction into CO (40.41~μmol~g-1~h-1) and prominent hydrogen evolution (4740~μmol~g-1~h-1, 12.2\% apparent quantum yield (AQY)).

}, keywords = {CO reduction, Delamination, Exciton dissociation, Graphitic carbon nitride, Hydrogen evolution, Photocatalyst}, isbn = {2589-2347}, url = {https://www.sciencedirect.com/science/article/pii/S2589234723000453}, author = {Kamal Hussien, Mahmoud and Sabbah, Amr and Mohammad Qorbani and Hammad Elsayed, Mohamed and Quadir, Shaham and Putikam Raghunath and Tzou, Der-Lii M. and Haw, Shu-Chih and Chou, Ho-Hsiu and Thang, Nguyen Quoc and M.-C. Lin and Li-Chyong Chen and Kuei-Hsien Chen} } @article {4421, title = {Atomistic insights into highly active reconstructed edges of monolayer 2H-WSe2 photocatalyst}, journal = {Nature Communications}, volume = {13}, year = {2022}, note = {

n/a

}, month = {2022}, pages = {1256}, abstract = {

Ascertaining the function of in-plane intrinsic defects and edge atoms is necessary for developing efficient low-dimensional photocatalysts. We report the wireless photocatalytic CO2 reduction to CH4 over reconstructed edge atoms of monolayer 2H-WSe2 artificial leaves. Our first-principles calculations demonstrate that reconstructed and imperfect edge configurations enable CO2 binding to form linear and bent molecules. Experimental results show that the solar-to-fuel quantum efficiency is a reciprocal function of the flake size. It also indicates that the consumed electron rate per edge atom is two orders of magnitude larger than the in-plane intrinsic defects. Further, nanoscale redox mapping at the monolayer WSe2{\textendash}liquid interface confirms that the edge is the most preferred region for charge transfer. Our results pave the way for designing a new class of monolayer transition metal dichalcogenides with reconstructed edges as a non-precious co-catalyst for wired or wireless hydrogen evolution or CO2 reduction reactions.

}, isbn = {2041-1723}, url = {https://doi.org/10.1038/s41467-022-28926-0}, author = {Mohammad Qorbani and Sabbah, Amr and Lai, Ying-Ren and Kholimatussadiah, Septia and Quadir, Shaham and Huang,Chih-Yang and Indrajit Shown and Yi-Fan Huang and Hayashi, Michitoshi and Kuei-Hsien Chen and Li-Chyong Chen} } @article {4418, title = {Boosting photocatalytic CO2 reduction in a ZnS/ZnIn2S4 heterostructure through strain-induced direct Z-scheme and a mechanistic study of molecular CO2 interaction thereon}, journal = {Nano Energy}, volume = {93}, year = {2022}, note = {

n/a

}, month = {2022}, pages = {106809}, abstract = {

Employing direct Z-scheme semiconductor heterostructures in photocatalysis offers efficient charge carrier separation and isolation of both redox reactions, thus beneficial to reduce CO2 into solar fuels. Here, a ZnS/ZnIn2S4 heterostructure, comprising cubic ZnS nanocrystals on hexagonal ZnIn2S4 (ZIS) nanosheets, is successfully fabricated in a single-pot hydrothermal approach. The composite ZnS/ZnIn2S4 exhibits microstrain at its interface with an electric field favorable for Z-scheme. At an optimum ratio of Zn:In (~ 1:0.5), an excellent photochemical quantum efficiency of around 0.8\% is reached, nearly 200-fold boost compared with pristine ZnS. Electronic levels and band alignments are deduced from ultraviolet photoemission spectroscopy and UV-Vis. Evidence of the direct Z-scheme and carrier dynamics is verified by photo-reduction experiment, along with photoluminescence (PL) and time-resolved PL. Finally, diffuse-reflectance infrared Fourier transformed spectroscopy explores the CO2 and related intermediate species adsorbed on the catalyst during the photocatalytic reaction. This microstrain-induced direct Z-scheme approach opens a new pathway for developing next-generation photocatalysts for CO2 reduction.

}, keywords = {CO reduction, Interfacial charge transfer, Photocatalysis, Z-Scheme, ZnInS, ZnS}, isbn = {2211-2855}, url = {https://www.sciencedirect.com/science/article/pii/S2211285521010582}, author = {Sabbah, Amr and Indrajit Shown and Mohammad Qorbani and Fang-Yu Fu and Lin, Tsai-Yu and Heng-Liang Wu and Chung, Po-Wen and Chih-I. Wu and Santiago, Svette Reina Merden and Ji-Lin Shen and Kuei-Hsien Chen and Li-Chyong Chen} } @article {4422, title = {Co3V2O8 hollow spheres with mesoporous walls as high-capacitance electrode for hybrid supercapacitor device}, volume = {436}, year = {2022}, note = {n/a}, month = {2022}, pages = {135225}, abstract = {

Bimetal oxides are promising materials in the field of energy storage due to their various oxidation states, synergistic interactions among multiple metal species, and stability. In this work, Co3V2O8 hollow spheres are synthesized by a two-step hydrothermal method: (i) synthesis of V2O5 spheres and (ii) partial replacement of V by Co through the Kirkendall effect. As an electrode, it shows an extrinsic pseudocapacitive charge-storage mechanism due to different oxidation states of V and Co ions. Because of the low crystallinity degree of the mesoporous wall and high accessible surface area of hollow spheres, the optimum Co3V2O8 electrode reaches a high specific capacitance of 2376F g-1 at a current density of 2 A g-1, which is more than two times higher than the top reported values, and a rate capability retention of~\~{}80\% at 20 A g-1. Using Co3V2O8, activated carbon, and KOH as positive, negative electrodes, and electrolyte, respectively, a hybrid supercapacitor device presents maximum energy and power densities of 59.2 Wh kg-1 and 36.6~kW~kg-1, respectively. Further, the aqueous supercapacitor device shows superior structural and electrochemical stabilities after 10,000 galvanostatic charge{\textendash}discharge cycles because of the arrays of voids in the orthorhombic crystal structure of Co3V2O8 that can decrease the volume expansion/shrinkage during the intercalation/deintercalation processes. Our results provide a platform for exploring bimetallic Co and V-based oxides, hydroxides, and sulfides nanostructures as promising energy storage materials in the future.

}, keywords = {bimetal oxide, hollow sphere, hybrid device, mesoporous, STABILITY, SUPERCAPACITOR}, isbn = {1385-8947}, url = {https://www.sciencedirect.com/science/article/pii/S1385894722007306}, author = {Fahimi, Zohre and Moradlou, Omran and Sabbah, Amr and Kuei-Hsien Chen and Li-Chyong Chen and Mohammad Qorbani} } @article {4450, title = {Effect of aliovalent substituted highly disordered GeTe compound{\textquoteright}s thermoelectric performance}, volume = {922}, year = {2022}, note = {n/a}, month = {2022}, pages = {166221}, abstract = {

As a lead-free high-performance thermoelectric material, germanium telluride (GeTe) has recently been extensively studied for mid-temperature (500{\textendash}800~K) applications. The carrier concentration and the thermal conductivity are reduced for vacancy-controlled GeTe compounds compared with pristine GeTe. We explored and optimized the Ge0.9-xSb0.1PxTe (x~=~0.01{\textendash}0.05) material{\textquoteright}s highest thermoelectric performance at elevated temperatures. Intrinsic Ge vacancy control and manipulation of Ge (+2) with Sb/P (+3) increased the charge contribution to power factor improvement to \~{}42 {\textmu}Wcm-1 K-2 while minimizing the lattice thermal contribution to \~{}0.4~W/mK. This resulted in an increase in thermoelectric performance of \~{}2.4~@~773~K for the Ge0.88Sb0.1P0.02Te sample. The inclusion of atomically disordered Sb/P ions considerably increases the scattering effects caused by the point defect, whereas stretched grain boundaries reveal the decreased lattice thermal contribution. The current work demonstrates the effectiveness of phosphorus as a co-dopant in increasing the average thermoelectric performance (ZTavg) value over the GeTe operating temperature range.

}, keywords = {Atomic disorder, Doping optimization, Figure of merit, thermal conductivity, Vacancy control}, isbn = {0925-8388}, url = {https://www.sciencedirect.com/science/article/pii/S0925838822026123}, author = {Bayikadi, Khasim Saheb and Imam, Safdar and Ubaid, Mohammad and Aziz, Anver and Kuei-Hsien Chen and Raman Sankar} } @article {4420, title = {Enhanced Thermoelectric Performance in Ternary Skutterudite Co(Ge0.5Te0.5)3 via Band Engineering}, journal = {Inorganic Chemistry}, year = {2022}, note = {

doi: 10.1021/acs.inorgchem.1c03947

}, month = {2022}, publisher = {American Chemical Society}, abstract = {

n/a

}, isbn = {0020-1669}, url = {https://doi.org/10.1021/acs.inorgchem.1c03947}, author = {Valiyaveettil, Suneesh Meledath and Nguyen, Duc-Long and Deniz P. Wong and Hsing, Cheng-Rong and Paradis-Fortin, Laura and Mohammad Qorbani and Sabbah, Amr and Chou, Ta-Lei and Wu, Kuei-Kuan and Rathinam, Vasudevan and Wei, Ching-Ming and Li-Chyong Chen and Kuei-Hsien Chen} } @article {4526, title = {Enhanced thermoelectric performance of skutterudite Co1-yNiySn1.5Te1.5-x with switchable conduction behavior}, journal = {Materials Today Physics}, volume = {28}, year = {2022}, note = {

n/a

}, month = {2022}, pages = {100889}, abstract = {

A fine control of carriers in solids is the most essential thing while exploring any functionality. For a ternary skutterudite like CoSn1{\textperiodcentered}5Te1.5-x, which has been recently recognized as a potential material for thermoelectric conversion, the dominant carrier could be either electrons or holes via chemically tuning the quaternary Sn2Te2 rings in the structure. Both theoretical calculation and different spectroscopic probes, such as X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS) were employed to unveil the conduction type switching details. On the other hand, a Ni-for-Co substitution was applied to enhance electronic transport, and thereby the thermoelectric power factor. Thanks to the substantial cut-off of lattice thermal conductivity by the characteristic Sn2Te2 rings in the skutterudite structure, ultimately a 70-fold increase in the dimensionless figure-of-merit (zT) is achieved at 723~K with the nominal composition Co0{\textperiodcentered}95Ni0{\textperiodcentered}05Sn1{\textperiodcentered}5Te1.5.

}, keywords = {Density functional theory, Phonon scattering, Skutterudite, Switchable carrier type, Thermoelectrics}, isbn = {2542-5293}, url = {https://www.sciencedirect.com/science/article/pii/S2542529322002875}, author = {Valiyaveettil, Suneesh Meledath and Mohammad Qorbani and Hsing, Cheng-Rong and Chou, Ta-Lei and Paradis-Fortin, Laura and Sabbah, Amr and Srivastava, Divya and Nguyen, Duc-Long and Ho, Thi-Thong and Tadesse Billo and Ganesan, Peramaiyan and Wei, Ching-Ming and Li-Chyong Chen and Kuei-Hsien Chen} } @article {4423, title = {Enhancing the Areal Capacity and Stability of Cu2ZnSnS4 Anode Materials by Carbon Coating: Mechanistic and Structural Studies During Lithiation and Delithiation}, journal = {ACS Omega}, volume = {7}, year = {2022}, note = {

doi: 10.1021/acsomega.1c05076

}, month = {2022}, pages = {9152 - 9163}, publisher = {American Chemical Society}, abstract = {

n/a

}, url = {https://doi.org/10.1021/acsomega.1c05076}, author = {Venugopal, Boya and Syum, Zeru and Yu, Sheng-Yu and Sabbah, Amr and Indrajit Shown and Chu, Chih-Wei and Li-Chyong Chen and Chih-Hao Lee and Heng-Liang Wu and Kuei-Hsien Chen} } @article {4417, title = {Enhancing the photovoltaic properties of SnS-Based solar cells by crystallographic orientation engineering}, journal = {Solar Energy Materials and Solar Cells}, volume = {236}, year = {2022}, note = {

n/a

}, month = {2022}, pages = {111499}, abstract = {

Tin monosulfide (SnS) is a promising light-harvesting material for solar cell applications, owing to its potential for large-scale production, cost-effectiveness, eco-friendly source materials, and long-term stability. However, SnS crystallizes in an orthorhombic structure, which results in a highly anisotropic charge transport behavior. Tailoring the crystallographic orientation of the SnS absorber layer plays a critical role in the enhancement of the transfer of charge carriers and the power conversion efficiency (PCE). By controlling the substrate tilting angle and temperature ramp rate in vapor transport deposition, the crystal growth orientation was tuned to a preferred direction which significantly suppressed the unfavorable (040) crystallographic plane. Through the combination of these two approaches, the PCE could be increased from 0.11\% to 2\%. The effect of the tilting angle was numerically simulated to investigate its role in controlling the film uniformity and directing the film growth. In addition, the correlation between the texture coefficient of the (040) plane and the charge transport properties was determined by a combination of analytical methods such as device performance studies, electrochemical impedance spectroscopy, along with transient photovoltage, space-charge-limited current, and dark current measurements. These techniques were blended together to prove that the marked improvement in PCE can be ascribed to a reduced charge recombination (in both SnS bulk and interfaces) and an enhanced hole mobility.

}, keywords = {Crystal orientation control, Thin film solar cells, Tin monosulfide}, isbn = {0927-0248}, url = {https://www.sciencedirect.com/science/article/pii/S0927024821005389}, author = {Ho, Thi-Thong and Jokar, Efat and Quadir, Shaham and Ruei-San Chen and Liu, Fang-Chen and Cheng-YingChen and Kuei-Hsien Chen and Li-Chyong Chen} } @article {4543, title = {Modulation and Direct Mapping of the Interfacial Band Alignment of an Eco-Friendly Zinc-Tin-Oxide Buffer Layer in SnS Solar Cells}, journal = {ACS Applied Energy MaterialsACS Applied Energy Materials}, volume = {5}, year = {2022}, note = {

doi: 10.1021/acsaem.2c03129

}, month = {2022}, pages = {14531 - 14540}, publisher = {American Chemical Society}, abstract = {n/a}, url = {https://doi.org/10.1021/acsaem.2c03129}, author = {Ho, Thi-Thong and Yang, Zi-Liang and Fang-Yu Fu and Jokar, Efat and Hsu, Hung-Chang and Liu, Pei-Chi and Quadir, Shaham and Cheng-YingChen and Ya-Ping Chiu and Chih-I Wu and Kuei-Hsien Chen and Li-Chyong Chen} } @article {4460, title = {Selective CO2-to-CO photoreduction over an orthophosphate semiconductor via the direct Z-scheme heterojunction of Ag3PO4 quantum dots decorated on SnS2 nanosheets}, journal = {Sustainable Energy \& Fuels}, volume = {6}, year = {2022}, note = {n/a}, month = {2022}, pages = {4418 - 4428}, publisher = {The Royal Society of Chemistry}, abstract = {

Direct Z-scheme heterojunctions are widely used for photocatalytic water splitting and CO2 reduction due to facilitating well-separated photogenerated charge carriers and spatial isolation of redox reactions. Here, using a facile two-step hydrothermal and ion-exchange method, we uniformly decorate silver orthophosphate (i.e., Ag3PO4) quantum dots with an average characteristic size of \~{}10 nm over tin(iv) sulphide (i.e., SnS2) nanosheets to form a 0D/2D heterojunction. The direct Z-scheme mechanism, i.e. charge transport for efficient electron (from SnS2) and hole (from Ag3PO4) recombination, is confirmed by the following experiments: (i) ultraviolet and X-ray photoelectron spectroscopies; (ii) photodeposition of Pt and PbO2 nanoparticles on reduction and oxidation sites, respectively; (iii) in situ X-ray photoelectron spectroscopy; and (iv) electron paramagnetic resonance spectroscopy. Owing to the photoreduction properties of Ag3PO4 with orthophosphate vacancies, Z-scheme charge carrier transfer, and efficient exciton dissociation, an optimized heterojunction shows a high CO2-to-CO reduction yield of 18.3 μmol g-1 h-1 with an illustrious selectivity of \~{}95\% under light illumination, which is about 3.0 and 47.8 times larger than that of Ag3PO4 and SnS2, respectively. The carbon source for the CO product is verified using a 13CO2 isotopic experiment. Moreover, by tracing the peak at \~{}1190 cm-1 in the dark and under light irradiation, in situ diffuse reflectance infrared Fourier transform spectroscopy demonstrates that the CO2 reduction pathway goes through the COOH* intermediate.

}, url = {http://dx.doi.org/10.1039/D2SE00873D}, author = {Fang-Yu Fu and Fan, Chi-Chan and Mohammad Qorbani and Huang,Chih-Yang and Kuo, Ping-Chun and Jih-Shang Hwang and Shu, Guo-Jiun and Chang, Sue-Min and Heng-Liang Wu and Chih-I Wu and Kuei-Hsien Chen and Li-Chyong Chen} } @article {4451, title = {Short- and Long-Range Cation Disorder in (AgxCu1{\textendash}x)2ZnSnSe4 Kesterites}, journal = {Chemistry of Materials}, year = {2022}, note = {

doi: 10.1021/acs.chemmater.2c01489

}, month = {2022}, publisher = {American Chemical Society}, abstract = {

n/a

}, isbn = {0897-4756}, url = {https://doi.org/10.1021/acs.chemmater.2c01489}, author = {Quadir, Shaham and Mohammad Qorbani and Sabbah, Amr and Wu, Tai-Sing and Anbalagan, Aswin kumar and Chen, Wei-Tin and Valiyaveettil, Suneesh Meledath and Thong, Ho-Thi and Wang, Chin-Wei and Cheng-YingChen and Chih-Hao Lee and Kuei-Hsien Chen and Li-Chyong Chen} } @article {4416, title = {Synthesis and characterization of Ge-Ag-Sb-S-Se-Te high-entropy thermoelectric alloys}, volume = {311}, year = {2022}, note = {n/a}, month = {2022}, pages = {131617}, abstract = {

Multielement alloying is an appealing approach for suppressing thermal conductivity of thermoelectric materials. In this study, we synthesized GeTe-based high-entropy alloys with notable (S, Se) substitution at Te sites and (Ag, Sb) at Ge sites. The Ge0.82Ag0.08Sb0.1S0.5Se0.1Te0.4 exhibits an extremely low thermal conductivity of~\~{}~0.66~W/m.K and a high Seebeck coefficient (\>250~μV/K) over a temperature range of 150 {\textendash} 400~{\textdegree}C. The influence of lattice distortion on phase transformation and transport properties of Ge0.9-2xAg2xSb0.1S0.5Se0.1Te0.4 (x~=~0 {\textendash} 0.06) was investigated.

}, keywords = {Functional, High-entropy alloy, Lattice distortion, Phase transformation, Thermal properties}, isbn = {0167-577X}, url = {https://www.sciencedirect.com/science/article/pii/S0167577X21023168}, author = {Yang, Min-Jung and Yusuf Fakhri, Muhammad and Liao, Chien-Neng and Kuei-Hsien Chen} } @article {4456, title = {Ultrathin amorphous defective co-doped hematite passivation layer derived via in-situ electrochemical method for durable photoelectrochemical water oxidation}, journal = {Journal of Materials Chemistry A}, year = {2022}, note = {n/a}, month = {2022}, pages = { - }, publisher = {The Royal Society of Chemistry}, abstract = {

Although hematite (i.e., α-Fe2O3) has been widely investigated in photoelectrochemical water oxidation studies due to its high theoretical photocurrent density, it still suffers from serious surface charge recombination and low photoelectrochemical stability. Here we report an in-situ electrochemical method to form a uniform and ultrathin (i.e., 3{\textendash}5 nm) passivation layer all over the porosities of the optimized ~3.2\% Ti-doped α-Fe2O3 photoanode. We unveil the amorphous and defective nature of the in-situ derived layer assigning to a high concentration of oxygen vacancy and intercalated potassium atoms there, i.e., the formation of Ti/K co-doped defective α-Fe2O3-x. Owing to the efficient passivation of surface states, alleviated surface-potential fluctuations, and low charge-transfer resistance at the interface, photoanodes show an average of ~60\% enhancement in the photoelectrochemical performance, applied bias absorbed photon-to-current efficiency of 0.43\%, and Faradaic efficiency of ~88\%. Moreover, the passivation layer prevents direct contact between the electrode material and electrolyte, resulting in less degradation and outstanding photoelectrochemical stability with photocurrent retention of ~95\% after ~100 hours, albeit by performing several successive in-situ electrochemical passivation processes. This work presents an industrially scalable method to controllably engineer the interfaces of semiconductors{\textendash}electrolytes with precious metal-free defective hematite-based co-catalysts for sustainable photoelectrochemical solar-to-fuel conversion applications.

}, isbn = {2050-7488}, url = {http://dx.doi.org/10.1039/D2TA03792K}, author = {Fathabadi, Milad and Mohammad Qorbani and Sabbah, Amr and Quadir, Shaham and Huang,Chih-Yang and Chen, Kuei Hsien and Li-Chyong Chen and Naimeh Naseri} } @article {https://doi.org/10.1002/smll.202105076, title = {Bandgap Shrinkage and Charge Transfer in 2D Layered SnS2 Doped with V for Photocatalytic Efficiency Improvement}, journal = {Small}, volume = {n/a}, number = {n/a}, year = {2022}, note = {

n/a

}, pages = {2105076}, abstract = {

Abstract Effects of electronic and atomic structures of V-doped 2D layered SnS2 are studied using X-ray spectroscopy for the development of photocatalytic/photovoltaic applications. Extended X-ray absorption fine structure measurements at V K-edge reveal the presence of VO and VS bonds which form the intercalation of tetrahedral OVS sites in the van der Waals (vdW) gap of SnS2 layers. X-ray absorption near-edge structure (XANES) reveals not only valence state of V dopant in SnS2 is ≈4+ but also the charge transfer (CT) from V to ligands, supported by V Lα,β resonant inelastic X-ray scattering. These results suggest V doping produces extra interlayer covalent interactions and additional conducting channels, which increase the electronic conductivity and CT. This gives rapid transport of photo-excited electrons and effective carrier separation in layered SnS2. Additionally, valence-band photoemission spectra and S K-edge XANES indicate that the density of states near/at valence-band maximum is shifted to lower binding energy in V-doped SnS2 compare to pristine SnS2 and exhibits band gap shrinkage. These findings support first-principles density functional theory calculations of the interstitially tetrahedral OVS site intercalated in the vdW gap, highlighting the CT from V to ligands in V-doped SnS2.

}, keywords = {band-gap shrinkage, charge transfer, Density functional theory, resonant inelastic X-ray scattering, V-doped 2D layered SnS2, X-ray absorption}, doi = {https://doi.org/10.1002/smll.202105076}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/smll.202105076}, author = {Shelke, Abhijeet R. and Wang, Hsiao-Tsu and Chiou, Jau-Wern and Indrajit Shown and Sabbah, Amr and Chen, Kuang-Hung and Teng, Shu-Ang and Lin, I-An and Lee, Chi-Cheng and Hsueh, Hung-Chung and Liang, Yu-Hui and Du, Chao-Hung and Yadav, Priyanka L. and Ray, Sekhar C. and Hsieh, Shang-Hsien and Pao, Chih-Wen and Tsai, Huang-Ming and Chen, Chia-Hao and Kuei-Hsien Chen and Li-Chyong Chen and Pong, Way-Faung} } @article {DAICHAKOMPHU2022162342, title = {Understanding the effect of sputtering pressures on the thermoelectric properties of GeTe films}, journal = {Journal of Alloys and Compounds}, volume = {893}, year = {2022}, note = {n/a}, pages = {162342}, abstract = {

In this work, we study the effect of sputtering pressures on the thermoelectric properties of GeTe films. The working pressures were differentiated from 3 to 30 mTorr, and the as-deposited films were annealed at 623~K for 10~min in Ar atmosphere. The results show that the working pressure has a significant effect on the Ge content and crystalline size. The turning trend of the Seebeck coefficient with different sputtering pressures corresponds to the Ge content. The surface morphology of annealed film will change from cracks to voids with increasing sputtering pressure. This behavior can be explained by the growth mechanisms model. The voids and relatively low crystalline size of GeTe films affect to the reduction of the electrical conductivity. In addition, the void content decreased as film thickness was increased. Therefore, controlling the working pressures in the sputtering process and film thickness is important for the thermoelectric performance of GeTe thin film. In our work, we prove that the thermoelectric properties of GeTe films could be optimized effectively by simply tuning different sputtering conditions.

}, keywords = {GeTe film, RF magnetron sputtering, Thermoelectric, Working pressure}, issn = {0925-8388}, doi = {https://doi.org/10.1016/j.jallcom.2021.162342}, url = {https://www.sciencedirect.com/science/article/pii/S092583882103752X}, author = {Noppanut Daichakomphu and Suman Abbas and Chou, Ta-Lei and Li-Chyong Chen and Kuei-Hsien Chen and Aparporn Sakulkalavek and Rachsak Sakdanuphab} } @article {4358, title = {Copper Zinc Tin Sulfide Anode Materials for Lithium-Ion Batteries at Low Temperature}, journal = {ACS Sustainable Chemistry \& EngineeringACS Sustainable Chemistry \& Engineering}, year = {2021}, note = {

doi: 10.1021/acssuschemeng.1c01341

}, month = {2021}, publisher = {American Chemical Society}, abstract = {n/a}, url = {https://doi.org/10.1021/acssuschemeng.1c01341}, author = {Syum, Zeru and Tadesse Billo and Sabbah, Amr and Venugopal, Boya and Yu, Sheng-Yu and Fang-Yu Fu and Heng-Liang Wu and Li-Chyong Chen and Kuei-Hsien Chen} } @article {4162, title = {Electronic structure modulation of isolated Co-N4 electrocatalyst by sulfur for improved pH-universal hydrogen evolution reaction}, journal = {Nano Energy}, volume = {80}, year = {2021}, note = {

n/a

}, month = {2021}, pages = {105544}, abstract = {

Exploring an efficient platinum group metal (PGM) free electrocatalyst with superior activity and stability for hydrogen evolution reaction (HER) in a wide pH range is desirable for low-cost hydrogen production. Here, we report atomically dispersed cobalt on nitrogen and sulfur co-doped graphene (N-Co-S/G) for HER. Remarkably, the prepared N-Co-S/G electrocatalyst shows a small overpotential of 67.7~mV vs. reversible hydrogen electrode (RHE) at a current density of 10~mA~cm-2 and exceptional durability over 100~h at 10~mA~cm-2 under acidic conditions. Moreover, we found that the HER activity of N-Co-S/G is close to 20\% Pt/C at all pH levels (0{\textendash}14) and superior activity at high current density (\>100~mA~cm-2). Experimental and theoretical calculations reveal that the S atom in N-Co-S/G form Co-S bond, resulting new Co-N3S1 active site, which optimizes Gibbs free energy for hydrogen adsorption (∆GH*) close to zero, while water adsorption and dissociation enhanced by S modulation for neutral and basic media HER.

}, keywords = {Atomic cobalt, ELECTRONIC STRUCTURE, graphene, Hydrogen evolution reaction (HER), Nitrogen and sulfur co-doped, Nonprecious electrocatalyst}, isbn = {2211-2855}, url = {http://www.sciencedirect.com/science/article/pii/S2211285520311186}, author = {Sabhapathy, Palani and Indrajit Shown and Sabbah, Amr and Putikam Raghunath and Chen, Jeng-Lung and Wei-Fu Chen and Lin, Ming-Chang and Kuei-Hsien Chen and Li-Chyong Chen} } @article {4389, title = {High-efficient photocatalytic degradation of commercial drugs for pharmaceutical wastewater treatment prospects: A case study of Ag/g-C3N4/ZnO nanocomposite materials}, journal = {Chemosphere}, volume = {282}, year = {2021}, note = {

n/a

}, month = {2021}, pages = {130971}, abstract = {

Pharmaceutical drugs{\textquoteright} removal from wastewater by photocatalytic oxidation process is considered as an attractive approach and environmentally friendly solution. This report aims to appraise the practical application potential of Ag/g-C3N4/ZnO nanorods toward the wastewater treatment of the pharmaceutical industry. The catalysts are synthesized by straightforward and environmentally-friendly strategies. Specifically, g-C3N4/ZnO nanorods heterostructure is constructed by a simple self-assembly method, and then Ag nanoparticles are decorated on g-C3N4/ZnO nanorods by a photoreduction route. The results show that three commercial drugs (paracetamol, amoxicillin, and cefalexin) with high concentration (40~mg~L-1) are significantly degraded in the existence of a small dosage of Ag/g-C3N4/ZnO nanorods (0.08~g~L-1). The Ag/g-C3N4/ZnO nanorods photocatalyst exhibits degradation performance of paracetamol higher 3.8, 1.8, 1.3 times than pristine g-C3N4, ZnO nanorods, and g-C3N4/ZnO nanorods. Furthermore, Ag/g-C3N4/ZnO nanorods have an excellent reusability and a chemical stability that achieved paracetamol degradation efficiency of 78\% and remained chemical structure of the photocatalyst after five cycles. In addition, the photocatalytic mechanism explanation and comparison of photocatalytic drugs{\textquoteright} degradation ability have also been discussed in this study.

}, keywords = {Ag/g-CN/ZnO nanorods, Catalyst dose, Commercial pharmaceuticals, Photocatalytic degradation, Visible light}, isbn = {0045-6535}, url = {https://www.sciencedirect.com/science/article/pii/S0045653521014430}, author = {Thang, Nguyen Quoc and Sabbah, Amr and Li-Chyong Chen and Kuei-Hsien Chen and Thi, Cao Minh and Viet, Pham Van} } @article {4386, title = {Impact of Cation Substitution in (AgxCu1-x)2ZnSnSe4 Absorber-Based Solar Cells toward 10\% Efficiency: Experimental and Theoretical Analyses}, journal = {Solar RRLSolar RRL}, volume = {n/a}, year = {2021}, note = {

https://doi.org/10.1002/solr.202100441

}, month = {2021}, pages = {2100441}, publisher = {John Wiley \& Sons, Ltd}, abstract = {

Solar cells based on kesterite Cu2ZnSnSe4 (CZTSe) compounds with earth-abundant elements are highly desirable for the low-cost and high-efficiency production of renewable energy. However, the occurrence of intrinsic defects substantially impairs the photovoltaic properties of CZTSe. Herein, a cation substitution method to control and passivate the defect states in bandgap of kesterite CZTSe by incorporating Ag ions is introduced. Intensity-dependent low-temperature photoluminescence measurements show that Ag incorporation can reduce the density and depth of intrinsic defects in CZTSe. The results reveal that 10\% Ag-alloyed CZTSe provides the shallowest defect states and less nonradiative recombination. It is also confirmed by first-principles calculations that Ag incorporation enables the formation and suppresses the beneficial and detrimental defects, respectively. Based on the theoretical results, the observed subband photoluminescence peaks can be assigned to the intrinsic point and cluster defects. The best power conversion efficiency of 10.2\% is achieved for the 10\% Ag-alloyed CZTSe cell, along with an enhanced open-circuit voltage. These results open up a new avenue for further improving the performances of CZTSe-based device via defect engineering.

}, keywords = {Ag{\textendash}CZTSe, DEFECTS, Kesterite, photoluminescence, photovoltaics}, isbn = {2367-198X}, url = {https://doi.org/10.1002/solr.202100441}, author = {Quadir, Shaham and Mohammad Qorbani and Lai, Ying-Ren and Sabbah, Amr and Thong, Ho{\textendash}Thi and Hayashi, Michitoshi and Chen, Cheng{\textendash}Ying and Chen, Kuei{\textendash}Hsien and Chen, Li{\textendash}Chyong} } @article {4398, title = {Metal-free four-in-one modification of g-C3N4 for superior photocatalytic CO2 reduction and H2 evolution}, journal = {Chemical Engineering Journal}, year = {2021}, note = {

n/a

}, month = {2021}, pages = {132853}, abstract = {

Utilization of g-C3N4 as a single photocatalyst material without combination with other semiconductor remains challenging. Herein, we report a facile green method for synthesizing a metal free modified g-C3N4 photocatalyst. The modification process combines four different strategies in a one-pot thermal reaction: non-metal doping, porosity generation, functionalization with amino groups, and thermal oxidation etching. The as-prepared amino-functionalized ultrathin nanoporous boron-doped g-C3N4 exhibited a high specific surface area of 143.2 m2 g-1 which resulted in abundant adsorption sites for CO2 and water molecules. The surface amino groups act as Lewis basic sites to adsorb acidic CO2 molecules, which can also serve as active sites to facilitate hydrogen generation. Besides, the simultaneous use of ammonium chloride as a dynamic gas bubble template along with thermal oxidation etching efficiently boosts the delamination of the g-C3N4 layers to produce ultrathin sheets; this leads to stronger light{\textendash}matter interactions and efficient charge generation. Consequently, the newly modified g-C3N4 achieved selective gas-phase CO2 reduction into CO with a production yield of 21.95 {\textmu}mol g-1, in the absence of any cocatalyst. Moreover, a high hydrogen generation rate of 3800 {\textmu}mol g-1 h-1 and prominent apparent quantum yield of 10.6\% were recorded. This work opens up a new avenue to explore different rational modifications of g-C3N4 nanosheets for the efficient production of clean energy.

}, keywords = {g-CN, CO reduction, Gas bubble template, Hydrogen generation, Metal-free photocatalyst}, isbn = {1385-8947}, url = {https://www.sciencedirect.com/science/article/pii/S1385894721044284}, author = {Kamal Hussien, Mahmoud and Sabbah, Amr and Mohammad Qorbani and Hammad Elsayed, Mohamed and Putikam Raghunath and Lin, Tsai-Yu and Quadir, Shaham and Wang, Hong-Yi and Heng-Liang Wu and Tzou, Der-Lii M. and Lin, Ming-Chang and Chung, Po-Wen and Chou, Ho-Hsiu and Li-Chyong Chen and Kuei-Hsien Chen} } @article {4390, title = {Microstructural intra-granular cracking in Cu2ZnSnS4@C thin-film anode enhanced the electrochemical performance in lithium-ion battery applications}, journal = {Materials Advances}, volume = {2}, year = {2021}, note = {n/a}, month = {2021}, pages = {5672 - 5685}, publisher = {RSC}, abstract = {

Cu2ZnSnS4 (CZTS) has demonstrated excellent performance as an anode material for lithium-ion batteries. However, the repeated lithiation and delithiation create a cracking pattern and lead to island formation in the thin-film electrode, resulting in a capacity fading over cycling in lithium-ion batteries (LIB{\textquoteright}s). In order to control this crack behaviour, we introduce carbon into CZTS thin-films by a hydrothermal method to form CZTS@C composite. CZTS@C significantly reduced the crack pattern formation on the electrode surface as well as improved the conductivity of the CZTS@C electrode. At the early stages of lithiation and delithiation, the volume expansion and contraction of Li{\textendash}CZTS@C create intra-granular cracking only at the surface level, and it offers a high capacity of about 785 mA h g-1 after 150 cycles at 1000 mA g-1 charging rate, excellent rate capability (942 mA h g-1, 678 mA h g-1 and 435 mA h g-1 at 500 mA g-1, 2000 mA g-1 and 5000 mA g-1), and superior cyclability (925 mA h g-1 even after 200 cycles at 500 mA g-1). The excellent electrochemical performance at high-current rates can be attributed to intra-granular cracking together with carbon coating that provides a short transportation length for both lithium ions and electrons. Moreover, the controlled cracking pattern formation in CZTS@C facilitates faster reaction kinetics, which open up a new solution for the development of high-power thin-film anodes for next-generation LIBs applications.

}, url = {http://dx.doi.org/10.1039/D1MA00471A}, author = {Venugopal, Boya and Indrajit Shown and Satyanarayana Samireddi and Syum, Zeru and Krishnamoorthy, Vimal and Heng-Liang Wu and Chu, Chih-Wei and Chih-Hao Lee and Li-Chyong Chen and Kuei-Hsien Chen} } @article {4352, title = {Nanoscale redox mapping at the MoS2-liquid interface}, volume = {12}, year = {2021}, note = {n/a}, month = {2021}, pages = {1321}, abstract = {

Layered MoS2 is considered as one of the most promising two-dimensional photocatalytic materials for hydrogen evolution and water splitting; however, the electronic structure at the MoS2-liquid interface is so far insufficiently resolved. Measuring and understanding the band offset at the surfaces of MoS2 are crucial for understanding catalytic reactions and to achieve further improvements in performance. Herein, the heterogeneous charge transfer behavior of MoS2 flakes of various layer numbers and sizes is addressed with high spatial resolution in organic solutions using the ferrocene/ferrocenium (Fc/Fc+) redox pair as a probe in near-field scanning electrochemical microscopy, i.e. in close nm probe-sample proximity. Redox mapping reveals an area and layer dependent reactivity for MoS2 with a detailed insight into the local processes as band offset and confinement of the faradaic current obtained. In combination with additional characterization methods, we deduce a band alignment occurring at the liquid-solid interface.

}, isbn = {2041-1723}, url = {https://doi.org/10.1038/s41467-021-21660-z}, author = {He-Yun Du and Yi-Fan Huang and Wong, Deniz and Tseng, Mao-Feng and Yi-Hsin Lee and Chen-Hao Wang and Lin, Cheng-Lan and Hoffmann, Germar and Kuei-Hsien Chen and Li-Chyong Chen} } @article {4392, title = {Optimal method for preparing sulfonated polyaryletherketones with high ion exchange capacity by acid-catalyzed crosslinking for proton exchange membrane fuel cells}, journal = {Journal of Polymer ScienceJournal of Polymer Science}, volume = {59}, year = {2021}, note = {

https://doi.org/10.1002/pol.20200872

}, month = {2021}, pages = {706 - 720}, publisher = {John Wiley \& Sons, Ltd}, abstract = {

Abstract Sulfonated polyaryletherketones (SPAEK) bearing four sulfonic acid groups on the phenyl side groups were synthesized. The benzophenone moiety of polymer backbone was further reduced to benzydrol group with sodium borohydride. The membranes were crosslinked by acid-catalyzed Friedel-Crafts reaction without sacrifice of sulfonic acid groups and ion exchange capacity (IEC) values. Crosslinked membranes with the same IEC value but different water uptake could be prepared. The optimal crosslinking condition was investigated to achieve lower water uptake, better chemical stability (Fenton{\textquoteright}s test), and higher proton conductivity. In addition, the hydrophilic ionic channels from originally course and disordered could be modified to be narrow and continuous by this crosslinking method. The crosslinked membranes, CS4PH-40-PEKOH (IEC = 2.4 meq./g), reduced water uptake from 200 to 88\% and the weight loss was reduced from 11 to 5\% during the Fenton test compared to uncrosslinked one (S4PH-40-PEK). The membrane showed comparable proton conductivity (0.01?0.19?S/cm) to Nafion 212 at 80{\textdegree}C from low to high relative humidity (RH). Single H2/O2 fuel cell based on the crosslinked SPAEK with catalyst loading of 0.25?mg/cm2 (Pd/C) exhibited a peak power density of 220.3 mW/cm2, which was close to that of Nafion 212 (214.0 mW/cm2) at 80{\textdegree}C under 53\% RH. These membranes provide a good option as proton exchange membrane with high ion exchange capacity for fuel cells.

}, keywords = {Fuel cell, Proton exchange membrane, sulfonated poly(aryletherketone)}, isbn = {2642-4150}, url = {https://doi.org/10.1002/pol.20200872}, author = {Shih-Wei Lee and Abdi, Zelalem Gudeta and Jyh-Chien Chen and Kuei-Hsien Chen} } @article {4391, title = {Solar to hydrocarbon production using metal-free water-soluble bulk heterojunction of conducting polymer nanoparticle and graphene oxide}, journal = {The Journal of Chemical PhysicsThe Journal of Chemical Physics}, volume = {154}, year = {2021}, note = {

doi: 10.1063/5.0042716

}, month = {2021}, pages = {164707}, publisher = {American Institute of Physics}, abstract = {n/a}, isbn = {0021-9606}, url = {https://doi.org/10.1063/5.0042716}, author = {Hsiang-Ting Lien and Chang, Yu-Chung and Huang,Chih-Yang and Hsin-Cheng Hsu and Sun-Tang Chang and Deniz P. Wong and Wang,Chia-Hsin and Chen-Hao Wang and Kuei-Hsien Chen and Li-Chyong Chen} } @article {4154, title = {Superior lithium-ion storage performance of hierarchical tin disulfide and carbon nanotube-carbon cloth composites}, journal = {Journal of Power Sources}, volume = {482}, year = {2021}, note = {

n/a

}, month = {2021}, pages = {228923}, abstract = {

Tin-based composites are promising anode materials for high-performance lithium-ion batteries (LIBs); however, insufficient conductivity, as well as fatal volume expansion during cycling lead to poor electrochemical reversibility and cycling stability. In this work, we demonstrate the lithium-ion storage behaviors of SnS2 anode material deposited on different electrode supports. The SnS2 grown on 3D hierarchical carbon nanotube-carbon cloth composites (SnS2-CNT-CC) shows superior capacity retention and cycle stability, compared to that on planar Mo sheets and carbon cloth. The specific capacity of SnS2 on Mo, CC, and CNT-CC is around 240, 840, and 1250 g-1, respectively. The SnS2-CNT-CC electrode outperforms in the cyclic performance and rate capability compared to other electrode configurations due to the multi-electron pathway and high surface area derived from 3D hierarchical CNT-CC electrode support. Furthermore, a significant decrease in the charge transfer resistance is observed by utilizing 3D hierarchical CNT-CC electrode support. The use of 3D hierarchical structures as electrode support could be the best alternative to enhance the electrochemical performances for the next generation LIBs.

}, keywords = {Conductive supports, Hierarchical carbon composites, Lithium ion batteries, Tin disulfide}, isbn = {0378-7753}, url = {http://www.sciencedirect.com/science/article/pii/S0378775320312246}, author = {Syum, Zeru and Venugopal, Boya and Sabbah, Amr and Tadesse Billo and Tsu-chin Chou and Heng-Liang Wu and Li-Chyong Chen and Kuei-Hsien Chen} } @article {4388, title = {Thermally Strain-Induced Band Gap Opening on Platinum Diselenide-Layered Films: A Promising Two-Dimensional Material with Excellent Thermoelectric Performance}, journal = {Chemistry of MaterialsChemistry of Materials}, volume = {33}, year = {2021}, note = {

doi: 10.1021/acs.chemmater.0c04351

}, month = {2021}, pages = {3490 - 3498}, publisher = {American Chemical Society}, abstract = {n/a}, isbn = {0897-4756}, url = {https://doi.org/10.1021/acs.chemmater.0c04351}, author = {Su, Teng-Yu and Wang, Te-Hsien and Deniz P. Wong and Wang, Yi-Chung and Huang, Angus and Sheng, Ying-Chun and Tang, Shin-Yi and Tsu-chin Chou and Chou, Ta-Lei and Jeng, Horng-Tay and Li-Chyong Chen and Kuei-Hsien Chen and Chueh, Yu-Lun} } @article {https://doi.org/10.1002/smll.202103823, title = {Synergistic Dual-Atom Molecular Catalyst Derived from Low-Temperature Pyrolyzed Heterobimetallic Macrocycle-N4 Corrole Complex for Oxygen Reduction}, journal = {Small}, volume = {17}, number = {46}, year = {2021}, note = {n/a}, pages = {2103823}, abstract = {

Abstract A heterobimetallic corrole complex, comprising oxygen reduction reaction (ORR) active non-precious metals Co and Fe with a corrole-N4 center (PhFCC), is successfully synthesized and used to prepare a dual-atom molecular catalyst (DAMC) through subsequent low-temperature pyrolysis. This low-temperature pyrolyzed electrocatalyst exhibited impressive ORR performance, with onset potentials of 0.86 and 0.94~V, and half-wave potentials of 0.75 and 0.85~V, under acidic and basic conditions, respectively. During potential cycling, this DAMC displayed half-wave potential losses of only 25 and 5~mV under acidic and alkaline conditions after 3000 cycles, respectively, demonstrating its excellent stability. Single-cell Nafion-based proton exchange membrane fuel cell performance using this DAMC as the cathode catalyst showed a maximum power density of 225~mW cm-2, almost close to that of most metal{\textendash}N4 macrocycle-based catalysts. The present study showed that preservation of the defined CoN4 structure along with the cocatalytic Fe{\textendash}Cx site synergistically acted as a dual ORR active center to boost overall ORR performance. The development of DAMC from a heterobimetallic CoN4-macrocyclic system using low-temperature pyrolysis is also advantageous for practical applications.

}, keywords = {corroles, dual-atom molecular catalyst, fuel cells, metal{\textendash}N4 macrocycles, non-precious electrocatalysts, oxygen reduction reaction}, doi = {https://doi.org/10.1002/smll.202103823}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/smll.202103823}, author = {Satyanarayana Samireddi and Aishwarya, V. and Indrajit Shown and Muthusamy, Saravanakumar and Unni, Sreekuttan M. and Ken-Tsung Wong and Kuei-Hsien Chen and Li-Chyong Chen} } @article {catal11111295, title = {Thickness-Dependent Photocatalysis of Ultra-Thin MoS2 Film for Visible-Light-Driven CO2 Reduction}, journal = {Catalysts}, volume = {11}, number = {11}, year = {2021}, note = {n/a}, abstract = {

The thickness of transition metal dichalcogenides (TMDs) plays a key role in enhancing their photocatalytic CO2 reduction activity. However, the optimum thickness of the layered TMDs that is required to achieve sufficient light absorption and excellent crystallinity has still not been definitively determined. In this work, ultra-thin molybdenum disulfide films (MoS2TF) with 25 nm thickness presented remarkable photocatalytic activity, and the product yield increased by about 2.3 times. The photocatalytic mechanism corresponding to the TMDs{\textquoteright} thickness was also proposed. This work demonstrates that the thickness optimization of TMDs provides a cogent direction for the design of high-performance photocatalysts.

}, issn = {2073-4344}, doi = {10.3390/catal11111295}, url = {https://www.mdpi.com/2073-4344/11/11/1295}, author = {Yi-Fan Huang and Liao, Kuan-Wei and Fahmi, Fariz Rifqi Zul and Modak, Varad A. and Tsai, Shang-Hsuan and Ke, Shang-Wei and Chen-Hao Wang and Li-Chyong Chen and Kuei-Hsien Chen} } @article {catal11070786, title = {Two-Dimensional Layered NiLiP2S6 Crystals as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting}, journal = {Catalysts}, volume = {11}, number = {7}, year = {2021}, note = {n/a}, abstract = {

The quest of earth-abundant bifunctional electrocatalysts for highly efficient oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is essential for clean and renewable energy systems. Herein, directed by the experimental analysis, we demonstrate layered nickel lithium phosphosulfide (NiLiP2S6) crystal as a highly efficient water-splitting catalyst in alkaline media. With strained lattice due to stacked layers as observed by TEM and electronic structure analysis performed by XPS showed mixed Ni2+,3+ oxidation states induced by addition of Li as a cation, NiLiP2S6 displays excellent OER (current density of 10 mA cm{\textendash}2 showed an overpotential of 303 mV vs. RHE and a Tafel slope of 114 mV dec{\textendash}1) and HER activity (current density of -10 mA cm{\textendash}2 showed an overpotential of 184 mV vs. RHE and a Tafel slope of 94.5 mV dec{\textendash}1). Finally, an alkaline media was employed to demonstrate the overall water splitting using NiLiP2S6 as both the anode and the cathode, which attained a 50 mA cm-2 current density at 1.68 V. This bimetallic phosphosulfide, together with long-term stability and enhanced intrinsic activity, shows enormous potential in water splitting applications.

}, issn = {2073-4344}, doi = {10.3390/catal11070786}, url = {https://www.mdpi.com/2073-4344/11/7/786}, author = {Huang, Song-Jeng and Muneeb, Adil and Sabhapathy, Palani and Bayikadi, Khasim Saheb and Murtaza, Tahir and Raju, Kalaivanan and Li-Chyong Chen and Kuei-Hsien Chen and Raman Sankar} } @article {4073, title = {Advanced nanoporous separators for stable lithium metal electrodeposition at ultra-high current densities in liquid electrolytes}, journal = {Journal of Materials Chemistry A}, volume = {8}, year = {2020}, note = {n/a}, month = {2020}, pages = {5095 - 5104}, publisher = {The Royal Society of Chemistry}, abstract = {

Lithium metal anodes form a dendritic structure after cycling which causes an internal short circuit in flammable electrolytes and results in battery fires. Today{\textquoteright}s separators are insufficient for suppressing the formation of lithium dendrites. Herein, we report on the use of mesoporous silica thin films (MSTFs) with perpendicular nanochannels (pore size \~{}5 nm) stacking on an anodic aluminum oxide (AAO) membrane as the MSTF⊥AAO separator for advancing Li metal batteries. The nanoporous MSTF⊥AAO separator with novel inorganic structures shows ultra-long term stability of Li plating/stripping in Li{\textendash}Li cells at an ultra-high current density and capacity (10 mA cm-2 and 5 mA h cm-2). A significant improvement over the state-of-the-art separator is evaluated based on three performance indicators, e.g. cycle life, current density and capacity. In Li{\textendash}Cu cells, the MSTF⊥AAO separator shows a coulombic efficiency of \>99.9\% at a current density of 10 mA cm-2 for more than 250 h of cycling. The separator gives improved rate capability in Li{\textendash}LiFePO4 (LFP) batteries. The excellent performance of the MSTF⊥AAO separator is due to good wetting of electrolytes, straight nanopores with negative charges, uniform Li deposition and blocking the finest dendrite.

}, isbn = {2050-7488}, url = {http://dx.doi.org/10.1039/C9TA13778E}, author = {Yang, Jingling and Wang, Chun-Yao and Wang, Chun-Chieh and Kuei-Hsien Chen and Mou, Chung-Yuan and Heng-Liang Wu} } @article {4127, title = {Fast growth of large-grain and continuous MoS2 films through a self-capping vapor-liquid-solid method}, volume = {11}, year = {2020}, note = {n/a}, month = {2020}, pages = {3682}, abstract = {

Most chemical vapor deposition methods for transition metal dichalcogenides use an extremely small amount of precursor to render large single-crystal flakes, which usually causes low coverage of the materials on the substrate. In this study, a self-capping vapor-liquid-solid reaction is proposed to fabricate large-grain, continuous MoS2 films. An intermediate liquid phase-Na2Mo2O7 is formed through a eutectic reaction of MoO3 and NaF, followed by being sulfurized into MoS2. The as-formed MoS2 seeds function as a capping layer that reduces the nucleation density and promotes lateral growth. By tuning the driving force of the reaction, large mono/bilayer (1.1 mm/200 μm) flakes or full-coverage films (with a record-high average grain size of 450 μm) can be grown on centimeter-scale substrates. The field-effect transistors fabricated from the full-coverage films show high mobility (33 and 49 cm2 V-1 s-1 for the mono and bilayer regions) and on/off ratio (1 ~ 5 {\texttimes} 108) across a 1.5 cm {\texttimes} 1.5 cm region.

}, isbn = {2041-1723}, url = {https://doi.org/10.1038/s41467-020-17517-6}, author = {Chang, Ming-Chiang and Po-Hsun Ho and Tseng, Mao-Feng and Lin, Fang-Yuan and Hou, Cheng-Hung and Lin, I-Kuan and Wang, Hsin and Huang, Pin-Pin and Chiang, Chun-Hao and Yang, Yueh-Chiang and Wang, I-Ta and He-Yun Du and Wen, Cheng-Yen and Jing-Jong Shyue and Chun-Wei Chen and Kuei-Hsien Chen and Chiu, Po-Wen and Li-Chyong Chen} } @article {4357, title = {Highly improved thermoelectric performance of BiCuTeO achieved by decreasing the oxygen content}, volume = {15}, year = {2020}, note = {n/a}, month = {2020}, pages = {100248}, abstract = {

BiCuTeO is a promising thermoelectric material owing to its intrinsically low thermal conductivity and high carrier concentration. This study investigated the influence of stoichiometric oxygen deficiencies on the thermoelectric performance of BiCuTeO. Bulk BiCuTeO1-x (0.16 >= x) samples were prepared by a conventional solid state reaction and pelleted by hot pressing. Synchrotron X-ray diffraction, electron probe X-ray microanalysis, scanning electron microscopy, and transmission electron microscopy characterized the samples. A maximum value of 1.06 was achieved for the dimensionless figure of merit ZT at 673~K for BiCuTeO0.88, which is approximately 49\% better than the current maximal ZT value for BiCuTeO. The power factor was noticeably improved owing to increases in the electrical conductivity and Seebeck coefficient. Moreover, the optimal oxygen deficiency could introduce nanoparticles, resulting in reduced thermal conductivity. The findings will be important for the future development of metal oxide thermoelectric materials for use in practical thermoelectric devices.

}, keywords = {Electrical conductivity, Figure of merit, Hot pressing, Secondary phases, thermal conductivity}, isbn = {2542-5293}, url = {https://www.sciencedirect.com/science/article/pii/S2542529320300729}, author = {H.-C. Chang and Chen, T.-H. and R. Sankar and Y-J Yang and L.-C. Chen and K.-H. Chen} } @article {4329, title = {Integrated nano-architectured photocatalysts for photochemical CO2 reduction}, journal = {Nanoscale}, volume = {12}, year = {2020}, note = {n/a}, month = {2020}, pages = {23301 - 23332}, publisher = {The Royal Society of Chemistry}, abstract = {

Recent advances in nanotechnology, especially the development of integrated nanostructured materials, have offered unprecedented opportunities for photocatalytic CO2 reduction. Compared to bulk semiconductor photocatalysts, most of these nanostructured photocatalysts offer at least one advantage in areas such as photogenerated carrier kinetics, light absorption, and active surface area, supporting improved photochemical reaction efficiencies. In this review, we briefly cover the cutting-edge research activities in the area of integrated nanostructured catalysts for photochemical CO2 reduction, including aqueous and gas-phase reactions. Primarily explored are the basic principles of tailor-made nanostructured composite photocatalysts and how nanostructuring influences photochemical performance. Specifically, we summarize the recent developments related to integrated nanostructured materials for photocatalytic CO2 reduction, mainly in the following five categories: carbon-based nano-architectures, metal{\textendash}organic frameworks, covalent-organic frameworks, conjugated porous polymers, and layered double hydroxide-based inorganic hybrids. Besides the technical aspects of nanostructure-enhanced catalytic performance in photochemical CO2 reduction, some future research trends and promising strategies are addressed.

}, isbn = {2040-3364}, url = {http://dx.doi.org/10.1039/D0NR05884J}, author = {Shit, Subhash Chandra and Indrajit Shown and Paul, Ratul and Kuei-Hsien Chen and Mondal, John and Li-Chyong Chen} } @article {4145, title = {Localized surface plasmonic resonance role of silver nanoparticles in the enhancement of long-chain hydrocarbons of the CO2 reduction over Ag-gC3N4/ZnO nanorods photocatalysts}, year = {2020}, note = {n/a}, month = {2020}, pages = {116049}, abstract = {

The conversion of CO2 into hydrocarbon fuels via the photocatalytic reaction route is considered a potential strategy to concurrently address serious energy crisis and greenhouse gas emission problems. Nevertheless, the generation of long-chain hydrocarbon products (Cn, n >= 2) from the visible-light-reactive photocatalytic CO2 reduction has also been considering a contemporary challenge. Herein, we indicate that Ag nanoparticles (Ag NPs) loaded gC3N4/ZnO nanorods heterojunction (Ag-gC3N4/ZnO NRs abbreviation) has extended photoactive range and enhanced specific surface area. The combination of Ag NPs and gC3N4/ZnO NRs significantly enhances photocatalytic CO2 reduction efficiency to form the acetone product. Detail, the acetone production efficiency of Ag-gC3N4/ZnO NRs is 8.4 and 7.5 times higher than pure ZnO NRs and gC3N4/ZnO NRs at the same condition, respectively. This study represents a potential approach toward higher-energy-value hydrocarbons production and greenhouse gas emission mitigation.

}, keywords = {gCN, Hydrocarbon selectivity, Photocatalytic CO reduction, Surface plasmonic effect, ZnO nanorod}, isbn = {0009-2509}, url = {http://www.sciencedirect.com/science/article/pii/S0009250920305819}, author = {Thang, Nguyen Quoc and Sabbah, Amr and Li-Chyong Chen and Kuei-Hsien Chen and Hai, Le Viet and Thi, Cao Minh and Viet, Pham Van} } @article {4121, title = {A mechanistic study of molecular CO2 interaction and adsorption on carbon implanted SnS2 thin film for photocatalytic CO2 reduction activity}, volume = {72}, year = {2020}, note = {n/a}, month = {2020}, pages = {104717}, abstract = {

Gas-phase photocatalytic reactions to convert carbon dioxide and water into oxygen and hydrocarbons are the foundation of life on earth. However, the efficiency of photosynthesis is relatively low (~1\%), which leaves much room for artificial photosynthesis to reach the benchmark of the solar cells (\>15\%). In this work, carbon implanted SnS2 thin films (C{\textendash}SnS2) were prepared to study photocatalytic activity and adsorbate-catalyst surface interactions during CO2 photoreduction. The electron density distribution in C{\textendash}SnS2 and its contribution toward the photogenerated charge transfer process has been analyzed by the angle-dependent X-ray absorption near-edge structure (XANES) study. The C{\textendash}SnS2 surface affinity toward the CO2 molecule was monitored by in-situ dark current and Raman spectroscopy measurements. By optimizing the dose during ion implantation, SnS2 thin film with 1~wt\% carbon incorporation shows 108 times enhancement in the CO2 conversion efficiency and more than 89\% product selectivity toward CH4 formation compared with the as-grown SnS2 without carbon incorporation. The improved photocatalytic activity can be ascribed to enhanced light harvesting, pronounced charge-transfer between SnS2 and carbon with improved carrier separation and the availability of highly active carbon sites that serve as favorable CO2 adsorption sites.

}, keywords = {artificial photosynthesis, Photocatalytic CO reduction, SnS, solar fuels}, isbn = {2211-2855}, url = {http://www.sciencedirect.com/science/article/pii/S2211285520302743}, author = {Tadesse Billo and Indrajit Shown and Anbalagan, Aswin kumar and Effendi, Tirta Amerta and Sabbah, Amr and Fang-Yu Fu and Chu, Che-Men and Woon, Wei-Yen and Ruei-San Chen and Chih-Hao Lee and Kuei-Hsien Chen and Li-Chyong Chen} } @article {4074, title = {Microstructure and mechanical stability of Bi doped Mg2Si0.4Sn0.6 thermoelectric material}, volume = {818}, year = {2020}, note = {n/a}, month = {2020}, pages = {152888}, abstract = {

Bi doped Mg2Si0.4Sn0.6 had been synthesised in a high energy ball mill followed by compaction using a sintering hot press. The structural and compositional characterization of sintered mass indicated the formation of a highly densified single-phase product. The microstructure of the hot-pressed samples had been critically assessed. Thermoelectric properties were measured between room temperature and 723 K. A decrease in electrical conductivity was found with the increase in temperature but the Seebeck coefficient showed a reverse trend justifying the attainment of degenerate semiconducting behaviour. Meanwhile, the lattice thermal conductivity was subdued to 1.5 W/mK at 623 K. However, the highest zT value of 0.8 was achieved at 723 K. Moreover, the detailed X-ray photoelectron spectroscopic analysis was carried for the determination of binding energy of the constituent elements in the experimental alloy; it also provided the correct estimation of atomic percentage of the concerned elements. The Raman spectrum revealed a shift in F2g peak with respect to that of Mg2Sn and Mg2Si in correspondence with the composition of the synthesised alloy. The synthesised alloy showed micro and nano hardness of 3.7 and 4.03 GPa respectively, which implies that good mechanical strength could be achieved in the synthesised alloy.

}, keywords = {High energy ball milling, Magnesium silicide stannide, Mechanical properties, n-type MgSiSn, Thermoelectric properties}, isbn = {0925-8388}, url = {http://www.sciencedirect.com/science/article/pii/S0925838819341349}, author = {Howlader, Smita and Vasudevan, R. and Jarwal, B. and Gupta, S. and K.-H. Chen and Sachdev, K. and Banerjee, M.K.} } @article {4071, title = {On the Reduction of O2 on Cathode Surfaces of Co{\textendash}Corrin and Co{\textendash}Porphyrin: A Computational and Experimental Study on Their Relative Efficiencies in H2O/H2O2 Formation}, journal = {The Journal of Physical Chemistry CThe Journal of Physical Chemistry C}, volume = {124}, year = {2020}, note = {

doi: 10.1021/acs.jpcc.0c00481

}, month = {2020}, pages = {4652 - 4659}, publisher = {American Chemical Society}, abstract = {n/a}, isbn = {1932-7447}, url = {https://doi.org/10.1021/acs.jpcc.0c00481}, author = {Huang, Wen-Fei and Sun-Tang Chang and Hsin-Chih Huang and Chen-Hao Wang and Li-Chyong Chen and Kuei-Hsien Chen and M. C. Lin} } @article {4144, title = {Probing the active site in single-atom oxygen reduction catalysts via operando X-ray and electrochemical spectroscopy}, volume = {11}, year = {2020}, note = {n/a}, month = {2020}, pages = {4233}, abstract = {

Nonnoble metal catalysts are low-cost alternatives to Pt for the oxygen reduction reactions (ORRs), which have been studied for various applications in electrocatalytic systems. Among them, transition metal complexes, characterized by a redox-active single-metal-atom with biomimetic ligands, such as pyrolyzed cobalt{\textendash}nitrogen{\textendash}carbon (Co{\textendash}Nx/C), have attracted considerable attention. Therefore, we reported the ORR mechanism of pyrolyzed Vitamin B12 using operando X-ray absorption spectroscopy coupled with electrochemical impedance spectroscopy, which enables operando monitoring of the oxygen binding site on the metal center. Our results revealed the preferential adsorption of oxygen at the Co2+ center, with end-on coordination forming a Co2+-oxo species. Furthermore, the charge transfer mechanism between the catalyst and reactant enables further Co{\textendash}O species formation. These experimental findings, corroborated with first-principle calculations, provide insight into metal active-site geometry and structural evolution during ORR, which could be used for developing material design strategies for high-performance electrocatalysts for fuel cell applications.

}, isbn = {2041-1723}, url = {https://doi.org/10.1038/s41467-020-17975-y}, author = {Hsiang-Ting Lien and Sun-Tang Chang and Chen, Po-Tuan and Deniz P. Wong and Chang, Yu-Chung and Lu, Ying-Rei and Dong, Chung-Li and Chen-Hao Wang and Kuei-Hsien Chen and Li-Chyong Chen} } @article {4072, title = {Synergistic optimization of thermoelectric performance of Sb doped GeTe with a strained domain and domain boundaries}, journal = {Journal of Materials Chemistry A}, volume = {8}, year = {2020}, note = {n/a}, month = {2020}, pages = {5332 - 5341}, publisher = {The Royal Society of Chemistry}, abstract = {

In addition to the Ge-vacancy control of GeTe, the antimony (Sb) substitution of GeTe for the improvement of thermoelectric performance is explored for Ge1-xSbxTe with x = 0.08{\textendash}0.12. The concomitant carrier concentration (n) and the aliovalent Sb ion substitution led to an optimal doping level of x = 0.10 to show ZT \~{} 2.35 near \~{}800 K, which is significantly higher than those single- and multi-element substitution studies of the GeTe system reported in the literature. In addition, Ge0.9Sb0.1Te demonstrates an impressively high power factor of \~{}36 μW cm-1 K-2 and a low thermal conductivity of \~{}1.1 W m-1 K-1 at 800 K. The enhanced ZT level for Ge0.9Sb0.1Te is explained through a systematic investigation of micro-structural change and strain analysis from room temperature to 800 K. A significant reduction of lattice thermal conductivity (κlat) is identified and explained by the Sb substitution-introduced strained and widened domain boundaries for the herringbone domain structure of Ge0.9Sb0.1Te. The Sb substitution created multiple forms of strain near the defect centre, the herringbone domain structure, and widened tensile/compressive domain boundaries to support phonon scattering that covers a wide frequency range of the phonon spectrum to reduce lattice thermal conductivity effectively.

}, isbn = {2050-7488}, url = {http://dx.doi.org/10.1039/D0TA00628A}, author = {Bayikadi, Khasim Saheb and Wu, Chien Ting and Li-Chyong Chen and Kuei-Hsien Chen and Fang-Cheng Chou and Raman Sankar} } @article {4075, title = {The dual-defective SnS2 monolayers: promising 2D photocatalysts for overall water splitting}, journal = {Physical Chemistry Chemical Physics}, volume = {21}, year = {2019}, note = {n/a}, month = {2019}, pages = {26292 - 26300}, publisher = {The Royal Society of Chemistry}, abstract = {

Photocatalytic water splitting is a promising way to produce hydrogen fuel from solar energy. In this regard, the search for new photocatalytic materials that can efficiently split water into hydrogen is essential. Here, using first-principles simulations, we demonstrate that the dual-defective SnS2 (Ni-SnS2-VS), by both single-atom nickel doping and sulfur monovacancies, becomes a promising two-dimensional photocatalyst compared with SnS2. The Ni-SnS2-VS monolayer, in particular, exhibits a suitable band alignment that perfectly overcomes the redox potentials for overall water splitting. The dual-defective monolayer displays remarkable photocatalytic activity, a spatially separated carrier, a broadened optical absorption spectrum, and enhanced adsorption energy of H2O. Therefore, the dual-defective SnS2 monolayer can serve as an efficient photocatalyst for overall water splitting to produce hydrogen fuel. Furthermore, a novel dual-defect method can be an effective strategy to enhance the photocatalytic behavior of 2D materials; it may pave inroads in the development of solar-fuel generation.

}, isbn = {1463-9076}, url = {http://dx.doi.org/10.1039/C9CP04649F}, author = {Sainbileg, Batjargal and Lai, Ying-Ren and Li-Chyong Chen and Hayashi, Michitoshi} } @article {3844, title = {Enhanced thermoelectric performance of BiCuTeO by excess Bi additions}, volume = {45}, year = {2019}, note = {n/a}, month = {2019}, pages = {9254 - 9259}, abstract = {

Thermoelectric (TE) devices used to convert waste heat directly into electricity are highly desirable for alleviating the prevailing energy crisis and global climate-change issues. Among the various TE materials available, metal oxides exhibit high thermal and chemical stabilities in air, and are hence, preferred for use in many TE applications. However, most of them possess TE figures of merit (ZT) that are below the applicable value of 2, in the mid-temperature region (from 250 to 600 {\textdegree}C). In a previous work, the removal of a small amount of Bi from BiCuSeO was found to improve the ZT of BiCuSeO. In this work, we pursue another track and study the TE performance of BiCuTeO after the addition of up to 6\% excess Bi. Bi1+xCuTeO (x = 0.00{\textendash}0.06) samples were prepared by solid-state reactions, followed by hot-pressing to form pellets. By adding a stoichiometric excess of Bi into BiCuTeO, 16\% enhancement in power factor was achieved at 450 {\textdegree}C. This enhancement can be attributed to the increase in the Seebeck coefficient because of the appearance of secondary phases. Detailed characterizations and discussions of the effect of the nominal excess Bi in BiCuTeO are presented in this paper. The findings of this study can be applied in the investigation of novel high-performance TE materials.

}, keywords = {Electrical conductivity (C), Hot pressing (A), Secondary phases, Thermal applications (E), Thermal properties (C)}, isbn = {0272-8842}, url = {http://www.sciencedirect.com/science/article/pii/S0272884219302901}, author = {Chang, Hui-Ching and You, Hao-Jen and Raman Sankar and Yang, Ying-Jay and Li-Chyong Chen and Kuei-Hsien Chen} } @article {4069, title = {Enhanced thermoelectric performance of GeTe through in situ microdomain and Ge-vacancy control}, journal = {Journal of Materials Chemistry A}, volume = {7}, year = {2019}, note = {n/a}, month = {2019}, pages = {15181 - 15189}, publisher = {The Royal Society of Chemistry}, abstract = {

A highly reproducible sample preparation method for pure GeTe in a rhombohedral structure without converting to the cubic structure up to \~{}500 {\textdegree}C is reported to show control of the Ge-vacancy level and the corresponding herringbone-structured microdomains. The thermoelectric figure-of-merit (ZT) for GeTe powder could be raised from \~{}0.8 to 1.37 at high temperature (HT) near \~{}500 {\textdegree}C by tuning the Ge-vacancy level through the applied reversible in situ route, which made it highly controllable and reproducible. The enhanced ZT of GeTe was found to be strongly correlated with both its significantly increased Seebeck coefficient (\~{}161 μV K-1 at 500 {\textdegree}C) and reduced thermal conductivity (\~{}2.62 W m-1 K-1 at 500 {\textdegree}C) for a sample with nearly vacancy-free thicker herringbone-structured microdomains in the suppressed rhombohedral-to-cubic structure phase transformation. The microdomain and crystal structures were identified with HR-TEM (high-resolution transmission electron microscopy) and powder X-ray diffraction (XRD), while electron probe micro-analysis (EPMA) was used to confirm the stoichiometry changes of Ge : Te. Theoretical calculations for GeTe with various Ge-vacancy levels suggested that the Fermi level shifts toward the valence band as a function of increasing the Ge-vacancy level, which is consistent with the increased hole-type carrier concentration (n) and effective mass (m*) deduced from the Hall measurements. The uniquely prepared sample of a near-vacancy-free GeTe in a rhombohedral structure at high temperature favoured an enhanced Seebeck coefficient in view of the converging L- and Σ-bands of the heavy effective mass at the Fermi level, while the high density domain boundaries for the domain of low carrier density were shown to reduce the total thermal conductivity effectively.

}, isbn = {2050-7488}, url = {http://dx.doi.org/10.1039/C9TA03503F}, author = {Bayikadi, Khasim Saheb and Raman Sankar and Wu, Chien Ting and Xia, Chengliang and Chen, Yue and Li-Chyong Chen and Kuei-Hsien Chen and Fang-Cheng Chou} } @article {3990, title = {Enhanced Thermoelectric Performance via Oxygen Manipulation in BiCuTeO}, journal = {MRS Advances}, volume = {4}, year = {2019}, note = {n/a}, month = {2019}, pages = {499-505}, publisher = {Materials Research Society}, abstract = {

BiCuTeO is a potential thermoelectric material owing to its low thermal conductivity and high carrier concentration. However, the thermoelectric performance of BiCuTeO is still below average and has much scope for improvement. In this study, we manipulated the nominal oxygen content in BiCuTeO and synthesized BiCuTeOx (x = 0.94{\textendash}1.06) bulks by a solid-state reaction and pelletized them by a cold-press method. The power factor was enhanced by varying the nominal oxygen deficiency due to the increased Seebeck coefficient. The thermal conductivity was also reduced due to the decrease in lattice thermal conductivity owing to the small grain size generated by the optimal nominal oxygen content. Consequently, the ZT value was enhanced by \~{}11\% at 523 K for stoichiometric BiCuTeO0.94 compared to BiCuTeO. Thus, optimal oxygen manipulation in BiCuTeO can enhance the thermoelectric performance. This study can be applied to developing oxides with high thermoelectric performances.

}, keywords = {DEFECTS, oxide, scanning electron microscopy (SEM), thermal conductivity, x-ray diffraction (XRD)}, url = {https://www.cambridge.org/core/article/enhanced-thermoelectric-performance-via-oxygen-manipulation-in-bicuteo/B2780167E3037CD80728B44E2FEBF5E7}, author = {Chang, Hui-Ching and You, Hao-Jen and Raman Sankar and Yang, Ying-Jay and Li-Chyong Chen and Kuei-Hsien Chen} } @article {3848, title = {Highly efficient nitrogen and carbon coordinated N{\textendash}Co{\textendash}C electrocatalysts on reduced graphene oxide derived from vitamin-B12 for the hydrogen evolution reaction}, journal = {Journal of Materials Chemistry A}, volume = {7}, year = {2019}, note = {n/a}, month = {2019}, pages = {7179 - 7185}, publisher = {The Royal Society of Chemistry}, abstract = {

Exploring electrocatalysts composed of earth-abundant elements for a highly efficient hydrogen evolution reaction (HER) is scientifically and technologically important for electrocatalytic water splitting. In this work, we report HER properties of acid treated pyrolyzed vitamin B12 supported on reduced graphene oxide (B12/G800A) that shows an extraordinarily enhanced catalytic activity with low overpotential (115 mV vs. RHE at 10 mA cm-2), which is better than that of most traditional nonprecious metal catalysts in acidic media. Stability tests through long-term potential cycles and at a constant current density confirm the exceptional durability of the catalyst. Notably, the B12/G800A catalyst exhibits extremely high turnover frequencies per cobalt site in acid, for example, 0.85 and 11.46 s-1 at overpotentials of 100 and 200 mV, respectively, which are higher than those reported for other scalable non-precious metal HER catalysts. Moreover, it has been conjectured that the covalency of Co{\textendash}C and Co{\textendash}N bonds affects HER activities by comparing the extended X-ray absorption fine structure (EXAFS) spectra of the B12/G800A. High-temperature treatment can modify the Co-corrin structure of B12 to form Co{\textendash}C bonds along with Co{\textendash}N, which broadens the band of cobalt, essentially lowering the d-band center from its Fermi level. The lower d-band center leads to a moderate hydrogen binding energy, which is favorable for hydrogen adsorption and desorption.

}, isbn = {2050-7488}, url = {http://dx.doi.org/10.1039/C8TA10935D}, author = {Sabhapathy, Palani and Liao, Chen-Cheng and Wei-Fu Chen and Tsu-chin Chou and Indrajit Shown and Sabbah, Amr and Yan-Gu Lin and Jyh-Fu Lee and Tsai, Ming-Kang and Kuei-Hsien Chen and Li-Chyong Chen} } @article {3842, title = {Integration of a ({\textendash}Cu{\textendash}S{\textendash})n plane in a metal{\textendash}organic framework affords high electrical conductivity}, volume = {10}, year = {2019}, note = {n/a}, month = {2019}, pages = {1721}, abstract = {

Designing highly conducting metal{\textendash}organic frameworks (MOFs) is currently a subject of great interest for their potential applications in diverse areas encompassing energy storage and generation. Herein, a strategic design in which a metal{\textendash}sulfur plane is integrated within a MOF to achieve high electrical conductivity, is successfully demonstrated. The MOF {[Cu2(6-Hmna)(6-mn)]{\textperiodcentered}NH4}n (1, 6-Hmna = 6-mercaptonicotinic acid, 6-mn = 6-mercaptonicotinate), consisting of a two dimensional ({\textendash}Cu{\textendash}S{\textendash})n plane, is synthesized from the reaction of Cu(NO3)2, and 6,6'-dithiodinicotinic acid via the in situ cleavage of an S{\textendash}S bond under hydrothermal conditions. A single crystal of the MOF is found to have a low activation energy (6 meV), small bandgap (1.34 eV) and a highest electrical conductivity (10.96 S cm-1) among MOFs for single crystal measurements. This approach provides an ideal roadmap for producing highly conductive MOFs with great potential for applications in batteries, thermoelectric, supercapacitors and related areas.

}, isbn = {2041-1723}, url = {https://doi.org/10.1038/s41467-019-09682-0}, author = {Abhishek Pathak and Shen, Jing-Wen and Muhammad Usman and Wei, Ling-Fang and Shruti Mendiratta and Chang, Yu-Shin and Sainbileg, Batjargal and Ngue, Chin-May and Ruei-San Chen and Hayashi, Michitoshi and Tzuoo-Tsair Luo and Fu-Rong Chen and Kuei-Hsien Chen and Tseng, Tien-Wen and Li-Chyong Chen and Kuang-Lieh Lu} } @article {3960, title = {KSCN-induced Interfacial Dipole in Black TiO2 for Enhanced Photocatalytic CO2 Reduction}, journal = {ACS Applied Materials \& InterfacesACS Applied Materials \& Interfaces}, volume = {11}, year = {2019}, note = {

doi: 10.1021/acsami.9b06264

}, month = {2019}, pages = {25186 - 25194}, publisher = {American Chemical Society}, abstract = {n/a}, isbn = {1944-8244}, url = {https://doi.org/10.1021/acsami.9b06264}, author = {Fang-Yu Fu and Indrajit Shown and Li, Chia-Shuo and Putikam Raghunath and Lin, Tsai-Yu and Tadesse Billo and Heng-Liang Wu and Chih-I Wu and Chung, Po-Wen and Lin, Ming-Chang and Li-Chyong Chen and Kuei-Hsien Chen} } @article {4070, title = {Polybenzimidazoles containing heterocyclic benzo[c]cinnoline structure prepared by sol-gel process and acid doping level adjustment for high temperature PEMFC application}, volume = {182}, year = {2019}, note = {n/a}, month = {2019}, pages = {121814}, abstract = {

Polybenzimidazoles containing heterocyclic benzo[c]cinnoline structure are synthesized from 3,8-benzo[c]cinnoline dicarboxylic acid, terephthalic acid and 3,3'-diaminobenzidine. Their membranes are prepared by sol-gel process, involving the conversion of polymer solution in polyphosphoric acid to phosphoric acid. The acid doping levels of the as-prepared membranes increase as the contents of benzo[c]cinnoline increase, indicating good interaction between phosphoric acid and benzo[c]cinnoline structure. The as-prepared membranes with high acid doping levels might lead to the dissolution of membranes in phosphoric acid at temperature higher than 120 {\textdegree}C. A new method is proposed to adjust acid doping levels by immersing the as-prepared membranes in diluted phosphoric acid solutions of various concentrations. The adjusted membranes (acid doping levels around 30 PA RU-1) exhibit enhanced mechanical properties with tensile strength in the range of 4.1{\textendash}5.2 MPa. The proton conductivity of adjusted membranes maintain at 0.15{\textendash}0.17 S cm-1 at 160 {\textdegree}C under ambient atmosphere without humidification. The single cells based on the adjusted membranes exhibit open circuit voltages and peak power densities from 0.89 to 0.91 V and 691{\textendash}1253 mW cm-2 at 160 {\textdegree}C, respectively. Compared to other polybenzimidazole membranes prepared by sol-gel process, the adjusted polybenzimidazoles show higher mechanical strength and better single cell performance.

}, keywords = {Benzo[]cinnoline, Fuel cell, Proton exchange membrane, Sol-gel process}, isbn = {0032-3861}, url = {http://www.sciencedirect.com/science/article/pii/S0032386119308201}, author = {Chen, Jyh-Chein and Hsiao, You-Rong and Liu, Yin-Cheng and Ping-Yen Chen and Kuei-Hsien Chen} } @article {4068, title = {Thermoelectric and electronic properties of chromium substituted tetrahedrite}, journal = {Semiconductor Science and Technology}, volume = {34}, year = {2019}, note = {n/a}, month = {2019}, pages = {035017}, publisher = {IOP Publishing}, abstract = {

Cr substituted tetrahedrites with the chemical formula Cu12-xCrxSb4S13 (x~=~0.15, 0.25, 0.35, 0.5, 0.75, 1.0) have been synthesised for thermoelectric study. Cr substitutes at the Cu site to optimize the thermoelectric properties and achieve a higher figure of merit (zT). X-Ray diffraction (XRD) analysis revealed that the tetrahedrite is the major phase with minor impurity phases. Electron probe microanalysis (EPMA) shows the formation of tetrahedrite main phase with near stoichiometry and the presence of Cu3SbS4, CuSbS2 and Sb as secondary phases. X-ray photoelectron spectroscopy (XPS) shows the oxidation state of Cu, Sb and S as +1, +3 and -2, respectively, whereas for Cr, it could not be identified. Temperature-dependent magnetic susceptibility of sample x~=~0.75 shows antiferromagnetic correlation originating from the Cr ion. The calculated effective magnetic moment of 2.83 μB per Cr atom indicates the presence of Cr+4 in this sample. The decrease in the electrical resistivity upon doping indicates the compensation of holes due to the substitution of Cr at the Cu site. But the x~=~0.35 sample is not following the trend due to larger compensation of holes with an activation energy of 124.6 meV. The temperature-dependent behaviour of electrical resistivity shows the shift in the Fermi level from the valance band towards the band gap. The absolute Seebeck coefficient is positive throughout the temperature range and follows a similar trend as that of electrical resistivity, with the exception of the x~=~0.35 sample. The electronic thermal conductivity reduces due to hole compensation caused by Cr substitution. Moreover, the substitution of Cr effectively reduces the lattice thermal conductivity due to point defect scattering of phonons. A maximum zT of 1.0 is achieved for sample x~=~0.35 at 700 K.

}, isbn = {0268-12421361-6641}, url = {http://dx.doi.org/10.1088/1361-6641/aafa31}, author = {Prem Kumar, D S and Tippireddy, Sahil and Anbalagan Ramakrishnan and Kuei-Hsien Chen and Malar, P and Mallik, Ramesh Chandra} } @article {4067, title = {Thermoelectric properties of Mn doped BiCuSeO}, journal = {Materials Research Express}, volume = {6}, year = {2019}, note = {n/a}, month = {2019}, pages = {086305}, publisher = {IOP Publishing}, abstract = {

BiCuSeO is a promising thermoelectric material having earth-abundant non-toxic constituents and favourable thermoelectric properties like ultra-low thermal conductivity. In this study, Mn+2 has been introduced at the Bi+3 site to increase hole concentration as well as Seebeck coefficient, through aliovalent doping and magnetic impurity incorporation respectively. Samples were prepared through two-step solid state synthesis with the composition Bi1-xMnxCuSeO (x~=~0.0, 0.04, 0.06, 0.08, 0.10 and 0.12). X-ray diffraction patterns confirmed the tetragonal (space group: P4/nmm) crystal structure of BiCuSeO as well as phase purity of the samples. The Seebeck coefficient and electrical resistivity had a decreasing trend with increasing doping fraction owing to the generation of charge carriers. The samples with x~=~0.04 and 0.06 showed temperature independent Seebeck coefficient above 523 K, which is a signature of small polaron hopping. While the Seebeck coefficient of the samples with x~=~0.08, 0.10 and 0.12 increased above 523 K due to the combination of localized and extended states. The thermal conductivity was dominated by the lattice part of the thermal conductivity. As a result of moderate Seebeck coefficient and low electrical resistivity, the highest power factor of 0.284 mW m-1-K2 was obtained for the Bi0.92Mn0.08CuSeO at 773 K, leading to a maximum zT of 0.4 at 773.

}, isbn = {2053-1591}, url = {http://dx.doi.org/10.1088/2053-1591/aaf710}, author = {Das, Sayan and Valiyaveettil, Suneesh Meledath and Kuei-Hsien Chen and Suwas, Satyam and Mallik, Ramesh Chandra} } @article {3843, title = {Ultrasensitive Gas Sensors Based on Vertical Graphene Nanowalls/SiC/Si Heterostructure}, journal = {ACS SensorsACS Sensors}, volume = {4}, year = {2019}, note = {

doi: 10.1021/acssensors.8b01312

}, month = {2019}, pages = {406 - 412}, publisher = {American Chemical Society}, abstract = {n/a}, url = {https://doi.org/10.1021/acssensors.8b01312}, author = {Roy, Pradip and Kumar and Haider, Golam and Tsu-chin Chou and Kuei-Hsien Chen and Li-Chyong Chen and Yang-Fang Chen and Liang, Chi-Te} } @article {CHEN2019256, title = {Interface engineering of CdS/CZTSSe heterojunctions for enhancing the Cu2ZnSn(S,Se)4 solar cell efficiency}, journal = {Materials Today Energy}, volume = {13}, year = {2019}, note = {n/a}, pages = {256 - 266}, abstract = {

Interface engineering of CdS/CZTS(Se) is an important aspect of improving the performance of buffer/absorber heterojunction combination. It has been demonstrated that the crossover phenomenon due to the interface recombination can be drastically eliminated by interface modification. Therefore, in-depth studies across the CdS/CZTS(Se) junction properties, as well as effective optimization processes, are very crucial for achieving high-efficiency CZTSSe solar cells. Here, we present a comprehensive study on the effects of soft-baking (SB) temperature on the junction properties and the corresponding optoelectronic and interface-structural properties. Based on in-depth photoemission studies corroborated with structural and composition analysis, we concluded that interdiffusion and intermixing of CZTSSe and CdS phases occurred on the Cu-poor surface of CZTSSe at elevated SB temperatures, and the interface dipole moments induced by electrostatic potential fluctuation were thus significantly eliminated. In contrast, with low SB temperature, the CdS/CZTSSe heterojunction revealed very sharp interface with very short interdiffusion, forming interface dipole moments and drastically deteriorating device performance. These post thermal treatments also significantly suppress defect energy level of interface measured by admittance spectroscopy from 294 to 109~meV due to CdS/CZTSSe interdiffusion. Meanwhile, the interdiffusion effects on the shift of valence band maximum, conduction band minimum and band offset across the heterojunction of thermally treated CdS/CZTSSe interface are spatially resolved at the atomic scale by measuring the local density of states with cross-sectional scanning tunneling microscopy and spectroscopy. A significant enhancement in the power conversion efficiency from 4.88\% to 8.48\% is achieved by a facile interface engineering process allowing a sufficient intermixing of CdS/Cd and CZTSSe/Se phases without detrimental recombination centers.

}, keywords = {CdS, CZTSSe, Heterojunction, Soft-baking}, issn = {2468-6069}, doi = {https://doi.org/10.1016/j.mtener.2019.05.015}, url = {http://www.sciencedirect.com/science/article/pii/S2468606919300097}, author = {Wei-ChaoChen and Cheng-YingChen and Yi-Rung Lin and Jan-Kai Chang and Chun-Hsiang Chen and Ya-Ping Chiu and Chih-I. Wu and Kuei-Hsien Chen and Li-Chyong Chen} } @article {2964, title = {Ge-Rich SiGe Mode-Locker for Erbium-Doped Fiber Lasers}, journal = {IEEE Journal of Selected Topics in Quantum Electronics}, volume = {24}, year = {2018}, note = {

n/a

}, month = {May-June 2018}, pages = {1 - 10}, abstract = {

n/a

}, keywords = {ABSORPTION, chemical exfoliation, composition ratio dependent saturable absorption, EDFL pulsation, erbium, erbium-doped fiber lasers, fibre lasers, FILMS, Ge-rich SiGe mode-locker, Ge-Si alloys, laser mode locking, laser tuning, nonstoichiometric saturable absorbers, Nonstoichiometric SiGe, optical fabrication, Optical fibers, optical pulse generation, optical saturable absorption, passive mode-locking, saturable absorption, self-amplitude modulation, self-phase modulation, SiGe, Silicon germanium, soliton compression, time 338 fs to 346 fs, time 730 fs, time 760 fs, time 820 fs, tunable nonlinear modulation depth, ultrafast fiber laser, ultrafast fiber lasers, Ultrafast optics, vaporized synthesis}, isbn = {1077-260X}, author = {C.C. Yang and C. H. Cheng and Chen, T. H. and Lin, Y. H. and Y. C. Chi and W. H. Tseng and P. H. Chang and C.Y. Chen and K. H. Chen and L. C. Chen and C.I. Wu and G. R. Lin} } @article {3078, title = {Above 10\% efficiency earth-abundant Cu2ZnSn(S,Se)4 solar cells by introducing alkali metal fluoride nanolayers as electron-selective contacts}, journal = {Nano Energy}, volume = {51}, year = {2018}, note = {

n/a

}, month = {2018}, pages = {597 - 603}, abstract = {

The present investigation mainly addresses the open circuit voltage (Voc) issue in kesterite based Cu2ZnSn(S,Se)4 solar cells by simply introducing alkali metal fluoride nanolayers (~ several nm NaF, or LiF) to lower the work functions of the front ITO contacts without conventional hole-blocking ZnO layers. Kelvin probe measurements confirmed that the work function of the front ITO decreases from 4.82 to 3.39 and 3.65 eV for NaF and LiF, respectively, resulting in beneficial band alignment for electron collection and/or hole blocking on top electrodes. Moreover, a 10.4\% power conversion efficiency (~ 11.5\% in the cell effective area) CZTSSe cell with improved Voc of up to 90 mV has been attained. This demonstration may provide a new direction of further boosting the performance of copper chalcogenide based solar cells as well.

}, keywords = {Alkali metal fluoride, CZTSSe, Electron-selective contacts, Kesterite, Open-circuit voltage deficit, Solar cells}, isbn = {2211-2855}, url = {http://www.sciencedirect.com/science/article/pii/S2211285518304233}, author = {Cheng-YingChen and Bandiyah Sri Aprillia and Wei-ChaoChen and Yen-Ching Teng and Chih-Yuan Chiu and Ruei-San Chen and Jih-Shang Hwang and Kuei-Hsien Chen and Li-Chyong Chen} } @article {2905, title = {Carbon-doped SnS2 nanostructure as a high-efficiency solar fuel catalyst under visible light}, journal = {Nature Communications}, volume = {9}, year = {2018}, note = {

n/a

}, month = {2018}, pages = {169}, abstract = {

Photocatalytic formation of hydrocarbons using solar energy via artificial photosynthesis is a highly desirable renewable-energy source for replacing conventional fossil fuels. Using an l-cysteine-based hydrothermal process, here we synthesize a carbon-doped SnS2 (SnS2-C)~metal dichalcogenide nanostructure, which exhibits a highly active and selective photocatalytic conversion of CO2 to hydrocarbons under visible-light. The interstitial carbon doping induced microstrain in the SnS2 lattice, resulting in different photophysical properties as compared with undoped SnS2. This SnS2-C photocatalyst significantly enhances the CO2 reduction activity under visible light, attaining a photochemical quantum efficiency of above 0.7\%. The SnS2-C photocatalyst represents an important contribution towards high quantum efficiency artificial photosynthesis based on gas phase photocatalytic CO2 reduction under visible light, where the in situ carbon-doped SnS2 nanostructure improves the stability and the light harvesting and charge separation efficiency, and significantly enhances the photocatalytic activity.

}, isbn = {2041-1723}, url = {https://doi.org/10.1038/s41467-017-02547-4}, author = {Indrajit Shown and Satyanarayana Samireddi and Chang, Yu-Chung and Putikam, Raghunath and Chang, Po-Han and Sabbah, Amr and Fang-Yu Fu and Wei-Fu Chen and Chih-I Wu and Yu, Tsyr-Yan and Chung, Po-Wen and M. C. Lin and Li-Chyong Chen and Kuei-Hsien Chen} } @article {2907, title = {Flexible sensor for dopamine detection fabricated by the direct growth of α-Fe2O3 nanoparticles on carbon cloth}, journal = {Applied Surface Science}, volume = {427}, year = {2018}, note = {

n/a

}, month = {2018}, pages = {387 - 395}, abstract = {

AbstractPorous α-Fe2O3 nanoparticles are directly grown on acid treated carbon cloth (ACC) using a simple hydrothermal method (denoted as ACC-α-Fe2O3) for employment as a flexible and wearable electrochemical electrode. The catalytic activity of ACC-α-Fe2O3 allowing the detection of dopamine (DA) is systematically investigated. The results showed that the ACC-α-Fe2O3 electrode exhibits impressive electrochemical sensitivity, stability and selectivity for the detection of DA. The detection limit determined with the amperometric method appears to be around 50nM with a linear range of 0.074{\textendash}113μM. The impressive DA sensing ability of the as prepared ACC-α-Fe2O3 electrode is due to the good electrochemical behavior and high electroactive surface area (19.96cm2) of α-Fe2O3 nanoparticles anchored on the highly conductive ACC. It is worth noting that such remarkable sensing properties can be maintained even when the electrode is in a folded configuration.

}, keywords = {-FeO, Amperometry, Biosensor, Carbon cloth, Dopamine, Flexible, Wearable, α}, isbn = {0169-4332}, url = {http://www.sciencedirect.com/science/article/pii/S0169433217325266}, author = {K.P.O., Mahesh and Indrajit Shown and Li-Chyong Chen and Kuei-Hsien Chen and Yian Tai} } @article {3849, title = {Influence of GeP precipitates on the thermoelectric properties of P-type GeTe and Ge0.9-xPxSb0.1Te compounds}, journal = {CrystEngComm}, volume = {20}, year = {2018}, note = {n/a}, month = {2018}, pages = {6449 - 6457}, publisher = {The Royal Society of Chemistry}, abstract = {

Germanium telluride (GeTe) is a very well known IV{\textendash}VI group semiconducting material with the advantageous property of showing metallic conduction, which materializes from its superior carrier concentration (n) (high number of Ge vacancies). A systematic investigation into the thermoelectric properties (TEP) of GeTe was reported by way of carrier concentration (n) engineering. The present investigation focuses on studying the effects of doping (antimony {\textendash} Sb) and co-doping (phosphorus {\textendash} P) on the TEP of GeTe. In order to understand the system, we have prepared p-type GeTe and Ge0.9-xPxSb0.1Te (x = 0, 0.01, 0.03, or 0.05) samples via a non-equilibrium solid state melt quenching (MQ) process, followed by hot press consolidation. Temperature dependent synchrotron X-ray diffraction studies reveal a phase transition from rhombohedral to simple cubic in the Ge0.9-xPxSb0.1Te system at 573 K, which is clearly reflected in the TEP. Further high resolution transmission electron microscopy (HRTEM) studies reveal the pseudo-cubic nature of the sample. However, powder X-ray diffraction (PXRD) and field emission scanning electron microscopy (FESEM) images and energy dispersive X-ray spectroscopy (EDX) studies confirm the presence of germanium phosphide (GeP) in all P-doped samples. The presence of a secondary phase and point defects (Sb \& P) enhanced the additional scattering effects in the system, which influenced the Seebeck coefficient and thermal conductivity of GeTe. A significant enhancement in the Seebeck coefficient (S) to \~{}225 μV K-1 and a drastic reduction in thermal conductivity (κ) to \~{}1.2 W mK-1 effectively enhanced the figure-of-merit (ZT) to \~{}1.72 at 773 K for Ge0.87P0.03Sb0.1Te, which is a \~{}3 fold increase for GeTe. Finally, P co-doped Ge0.9Sb0.1Te demonstrates an enhancement in ZT, making it a good candidate material for power generation applications.

}, url = {http://dx.doi.org/10.1039/C8CE01134F}, author = {Rajeev Gandhi, J. and Nehru, Raja and Chen, Sheng-Ming and Raman Sankar and Bayikadi, Khasim Saheb and Sureshkumar, Palanivel and Kuei-Hsien Chen and Li-Chyong Chen} } @article {3855, title = {Multicolor Ultralow-Threshold Random Laser Assisted by Vertical-Graphene Network}, journal = {Advanced Optical MaterialsAdvanced Optical Materials}, volume = {6}, year = {2018}, note = {

doi: 10.1002/adom.201800382

}, month = {2018}, pages = {1800382}, publisher = {John Wiley \& Sons, Ltd}, abstract = {

Abstract Application of lasers is omnipresent in modern-day technology. However, preparation of a lasing device usually requires sophisticated design of the materials and is costly, which may limit the suitable choice of materials and the lasing wavelengths. Random lasers, on the other hand, can circumvent the aforementioned shortcomings with simpler fabrication process, lower processing cost, material flexibility for any lasing wavelengths with lower lasing threshold, providing a roadmap for the design of super-bright lighting, displays, Li-Fi, etc. In this work, ultralow-threshold random laser action from semiconductor nanoparticles assisted by a highly porous vertical-graphene-nanowalls (GNWs) network is demonstrated. The GNWs embedded by the nanomaterials produce a suitable cavity for trapping the optical photons with semiconductor nanomaterials acting as the gain medium. The observed laser action shows ultralow values of threshold energy density ≈10 nJ cm?2 due to the strong photon trapping within the GNWs. The threshold pump fluence can be further lowered to ≈1 nJ cm?2 by coating Ag/SiO2 upon the GNWs due to the combined effect of photon trapping and strong plasmonic enhancement. In view of the growing demand of functional materials and novel technologies, this work provides an important step toward realization of high-performance optoelectronic devices.

}, keywords = {perovskite nanocrystals, plasmonic, random lasers, ultralow threshold, vertical graphene nanowalls}, isbn = {2195-1071}, url = {https://doi.org/10.1002/adom.201800382}, author = {Roy, Pradip Kumar and Haider, Golam and Lin, Hung-I and Liao, Yu-Ming and Lu, Cheng-Hsin and Kuei-Hsien Chen and Li-Chyong Chen and Shih, Wei-Heng and Liang, Chi-Te and Yang-Fang Chen} } @article {Chen2018, title = {Above 10\% Efficiency Earth-abundant Cu2ZnSn(S,Se)4 Solar Cells by Introducing Alkali Metal Fluoride Nanolayers as Electron-selective Contacts}, journal = {Nano Energy}, year = {2018}, note = {n/a}, pages = {-}, abstract = {

Abstract The present investigation mainly addresses the open circuit voltage (Voc) issue in kesterites based Cu2ZnSn(S,Se)4 solar cells by simply introducing alkali metal fluoride nanolayers (~ several nm NaF, or LiF) to lower the work functions of the front {\.I}TO\} contacts without conventional hole-blocking ZnO layers. Kelvin probe measurements confirmed that the work function of the front {\.I}TO\} decreases from 4.82 to 3.39 and 3.65 eV for NaF and LiF, respectively, resulting in beneficial band alignment for electron collection and/or hole blocking on top electrodes. Moreover, a 10.4\% power conversion efficiency (~11.5\% in the cell effective area) \{CZTSSe\} cell with improved Voc of up to 90 mV has been attained. This demonstration may provide a new direction of further boosting the performance of copper chalcogenide based solar cells as well.

}, keywords = {Solar cells}, issn = {2211-2855}, doi = {https://doi.org/10.1016/j.nanoen.2018.06.028}, url = {https://www.sciencedirect.com/science/article/pii/S2211285518304233}, author = {Cheng-YingChen and Bandiyah Sri Aprillia and Wei-ChaoChen and Yen-Ching Teng and Chih-Yuan Chiu and Ruei-San Chen and Jih-Shang Hwang and Kuei-Hsien Chen and Li-Chyong Chen} } @article {CHEN2018143, title = {Analysis and characterization of an atropisomeric ionomer containing quaternary ammonium groups}, journal = {Polymer}, volume = {141}, year = {2018}, note = {n/a}, pages = {143 - 153}, abstract = {

Polyethersulfone ionomers containing quaternary ammoniums were prepared for the applications on alkaline anion exchange membrane (AAEM) fuel cells. The ionomers were synthesized from 2,2'-dimethyl-4,4'-biphenyldiol and bis(4-chlorophenyl) sulfone via nucleophilic substitution followed by bromination, quaternization and anion exchange reaction. The biphenyl structure in polymer main chain exhibited atropisomerism after bromination, leading to the anisochronous signals of geminal protons on bromomethyl groups in 1H NMR spectra. Model compounds were synthesized to confirm the atropisomerism by EI mass and 1H NMR spectra. The resonance peaks from five possible repeating units of brominated polyethersulfones in the 1H NMR spectra were identified and discussed in detail. The rotational barriers of biphenyl structures containing brominated methyl groups at 2 and 2' positions were calculated by density functional theory. The properties of these polyethersulfone anion exchange membranes (AEMs) were characterized. Their IECs ranged from 0.81 to 1.75 mequiv/g. The corresponding water uptakes and dimensional changes were in the ranges of 19{\textendash}42\% and 12{\textendash}38\%, respectively. The tensile strength of an AEM (1.75MQAPES-OH) with an IEC of 1.75 mequiv/g remained 17 MPa even though the water uptake was 42\%. The hydroxide conductivity of 1.75MQAPES-OH could reach 51.4 mS/cm at 98\%RH and 80 {\textdegree}C. After alkaline stability test for 168 h, the AEMs degraded slightly in terms of their IECs and hydroxide conductivity.

}, keywords = {Anion exchange membrane, Atropisomerism, Chiral axis}, issn = {0032-3861}, doi = {https://doi.org/10.1016/j.polymer.2018.03.002}, url = {http://www.sciencedirect.com/science/article/pii/S0032386118302015}, author = {Jyh-Chien Chen and Ping-Yen Chen and Han-Yu Chen and Kuei-Hsien Chen} } @article {SMLL:SMLL201702928, title = {Ni-Nanocluster Modified Black TiO2 with Dual Active Sites for Selective Photocatalytic CO2 Reduction}, journal = {Small}, volume = {14}, number = {2}, year = {2018}, note = {

1702928

}, pages = {1702928{\textendash}n/a}, abstract = {

One of the key challenges in artificial photosynthesis is to design a photocatalyst that can bind and activate the CO2 molecule with the smallest possible activation energy and produce selective hydrocarbon products. In this contribution, a combined experimental and computational study on Ni-nanocluster loaded black TiO2 (Ni/TiO2[Vo]) with built-in dual active sites for selective photocatalytic CO2 conversion is reported. The findings reveal that the synergistic effects of deliberately induced Ni nanoclusters and oxygen vacancies provide (1) energetically stable CO2 binding sites with the lowest activation energy (0.08 eV), (2) highly reactive sites, (3) a fast electron transfer pathway, and (4) enhanced light harvesting by lowering the bandgap. The Ni/TiO2[Vo] photocatalyst has demonstrated highly selective and enhanced photocatalytic activity of more than 18 times higher solar fuel production than the commercial TiO2 (P-25). An insight into the mechanisms of interfacial charge transfer and product formation is explored.

}, keywords = {artificial photosynthesis, black TiO2, photocatalytic CO2 reduction, solar fuels}, issn = {1613-6829}, doi = {10.1002/smll.201702928}, url = {http://dx.doi.org/10.1002/smll.201702928}, author = {Tadesse Billo and Fang-Yu Fu and Putikam Raghunath and Indrajit Shown and Wei-Fu Chen and Hsiang-Ting Lien and Tzu-Hsien Shen and Jyh-Fu Lee and Ting-Shan Chan and Kuo-You Huang and Chih-I Wu and M. C. Lin and Jih-Shang Hwang and Chih-Hao Lee and Li-Chyong Chen and Kuei-Hsien Chen} } @article {CHIU2018438, title = {A synergistic {\textquotedblleft}cascade{\textquotedblright} effect in copper zinc tin sulfide nanowalls for highly stable and efficient lithium ion storage}, journal = {Nano Energy}, volume = {44}, year = {2018}, note = {n/a}, pages = {438 - 446}, abstract = {n/a}, keywords = {Anode, Cascade effect, Copper zinc tin sulfide, High rate capability, Lithium ion batteries, Nanostructure}, issn = {2211-2855}, doi = {https://doi.org/10.1016/j.nanoen.2017.12.020}, url = {http://www.sciencedirect.com/science/article/pii/S2211285517307954}, author = {Jian-Ming Chiu and Tsu-chin Chou and Deniz P. Wong and Yi-Rung Lin and Chin-An Shen and Sunny Hy and Bing-Joe Hwang and Yian Tai and Heng-Liang Wu and Li-Chyong Chen and Kuei-Hsien Chen} } @article {3853, title = {Enhanced hydrogen evolution reaction on hybrids of cobalt phosphide and molybdenum phosphide}, journal = {Royal Society open science}, volume = {4}, year = {2017}, note = {n/a}, month = {2017/03/01}, pages = {161016161016 - 161016}, publisher = {The Royal Society Publishing}, abstract = {

Production of hydrogen from water electrolysis has stimulated the search of sustainable electrocatalysts as possible alternatives. Recently, cobalt phosphide (CoP) and molybdenum phosphide (MoP) received great attention owing to their superior catalytic activity and stability towards the hydrogen evolution reaction (HER) which rivals platinum catalysts. In this study, we synthesize and study a series of catalysts based on hybrids of CoP and MoP with different Co/Mo ratio. The HER activity shows a volcano shape and reaches a maximum for Co/Mo = 1. Tafel analysis indicates a change in the dominating step of Volmer-Hyrovsk{\'y} mechanism. Interestingly, X-ray diffraction patterns confirmed a major ternary interstitial hexagonal CoMoP(2) crystal phase is formed which enhances the electrochemical activity.

}, isbn = {2054-57032054-5703}, url = {https://www.ncbi.nlm.nih.gov/pubmed/28405392}, author = {Fang, Si-Ling and Tsu-chin Chou and Satyanarayana Samireddi and Kuei-Hsien Chen and Li-Chyong Chen and Wei-Fu Chen} } @article {3851, title = {Improved Solar-Driven Photocatalytic Activity of Hybrid Graphene Quantum Dots/ZnO Nanowires: A Direct Z-Scheme Mechanism}, journal = {ACS Sustainable Chemistry \& EngineeringACS Sustainable Chemistry \& Engineering}, volume = {5}, year = {2017}, note = {

doi: 10.1021/acssuschemeng.6b01738

}, month = {2017}, pages = {367 - 375}, publisher = {American Chemical Society}, abstract = {n/a}, url = {https://doi.org/10.1021/acssuschemeng.6b01738}, author = {Ebrahimi, Mahdi and Samadi, Morasae and Yousefzadeh, Samira and Soltani, Mojtaba and Rahimi, Alireza and Tsu-chin Chou and Li-Chyong Chen and Kuei-Hsien Chen and Moshfegh, Alireza Zaker} } @article {3854, title = {Synthesis and Properties of Poly(ether sulfone)s with Clustered Sulfonic Groups for PEMFC Applications under Various Relative Humidity}, journal = {ACS Applied Materials \& InterfacesACS Applied Materials \& Interfaces}, volume = {9}, year = {2017}, note = {

doi: 10.1021/acsami.7b00919

}, month = {2017}, pages = {9805 - 9814}, publisher = {American Chemical Society}, abstract = {n/a}, isbn = {1944-8244}, url = {https://doi.org/10.1021/acsami.7b00919}, author = {Shih-Wei Lee and Jyh-Chien Chen and Jin-An Wu and Kuei-Hsien Chen} } @article {2856, title = {Co-solvent effect on microwave-assisted Cu2ZnSnS4 nanoparticles synthesis for thin film solar cell}, journal = {Solar Energy Materials and Solar Cells}, volume = {161}, year = {2017}, pages = {416-423}, author = {Wei-ChaoChen and Venkatesh Tunuguntla and Min-HsuehChiu and Lian-JiunLi and Indrajit Shown and Chih-Hao Lee and Jih-Shang Hwang and Li-Chyong Chen and Kuei-Hsien Chen} } @article {2857, title = {Effect of pore-directing agents in SBA-15 nanoparticles on the performance of Nafion{\textregistered}/SBA-15n composite membranes for DMFC}, journal = {Journal of Membrane Science}, volume = {526}, year = {2017}, pages = {106-117}, author = {Ciao-WeiYang and Chin-ChangChen and Kuei-Hsien Chen and SoofinCheng} } @article {2848, title = {Enhancement in Thermoelectric Properties of TiS2 by Sn Addition}, journal = {Journal of Electronic Materials}, year = {2017}, pages = {1{\textendash}8}, author = {Anbalagan Ramakrishnan and Sankar Raman and Li-Chyong Chen and Kuei-Hsien Chen} } @article {2852, title = {Geogrid-Inspired Nanostructure to Reinforce a CuxZnySnzS Nanowall Electrode for High-Stability Electrochemical Energy Conversion Devices}, journal = {Advanced Energy Materials}, volume = {7}, year = {2017}, pages = {1602210}, author = {Jian-Ming Chiu and E-Ming Chen and Chuan-Pei Lee and Indrajit Shown and Venkatesh Tunuguntla and Jui-Sheng Chou and Li-Chyong Chen and Kuei-Hsien Chen and Yian Tai} } @article {2859, title = {High-κ Samarium-Based Metal{\textendash}Organic Framework for Gate Dielectric Applications}, journal = {ACS Appl. Mater. Interfaces}, volume = {9}, year = {2017}, pages = {21872{\textendash}21878}, author = {Abhishek Pathak and Guan Ru Chiou and Narsinga Rao Gade and Muhammad Usman and Shruti Mendiratta and Tzuoo-Tsair Luo and Tien Wen Tseng and Jenq-Wei Chen and Fu-Rong Chen and Kuei-Hsien Chen and Li-Chyong Chen and Kuang-Lieh Lu} } @article {2854, title = {Hybrid bimetallic-N4 electrocatalyst derived from a pyrolyzed ferrocene{\textendash}Co-corrole complex for oxygen reduction reaction}, journal = {Journal of Materials Chemistry A}, volume = {5}, year = {2017}, pages = {9279-9286}, attachments = {https://labs.iams.sinica.edu.tw/project/sites/default/files/chenkh/files/satya.pdf}, author = {Satyanarayana Samireddi and Indrajit Shown and Tzu-Hsien Shen and Hsin-Chih Huang and Ken-Tsung Wong and Li-Chyong Chen and Kuei-Hsien Chen} } @article {2850, title = {Multi-porous Co3O4 nanoflakes @ sponge-like few-layer partially reduced graphene oxide hybrids: towards highly stable asymmetric supercapacitors}, journal = {Journal of Materials Chemistry A}, volume = {5}, year = {2017}, pages = {12569-12577}, attachments = {https://labs.iams.sinica.edu.tw/project/sites/default/files/chenkh/files/c7ta00694b.pdf}, author = {Mohammad Qorbani and Tsu-chin Chou and Yi-Hsin Lee and Satyanarayana Samireddi and Naimeh Naseri and Abhijit Ganguly and Ali Esfandiar and Chen-Hao Wang and Li-Chyong Chen and Kuei-Hsien Chen and Alireza Z. Moshfegh} } @article {2860, title = {Photoconduction properties and anomalous power-dependent quantum efficiency in non-polar ZnO epitaxial films grown by chemical vapor deposition}, journal = {APPLIED PHYSICS LETTERS }, volume = {110}, year = {2017}, pages = {052101 }, author = {Lin, C. H. and R. S. Chen and Y.K. Lin and S.B. Wang and L. C. Chen and K. H. Chen and M. C. Wen and M. M. C. Chou and L. Chang} } @article {2851, title = {Pyrolysis of Iron{\textendash}Vitamin B9 As a Potential Nonprecious Metal Electrocatalyst for Oxygen Reduction Reaction}, journal = {Search Results ACS Sustainable Chemistry \& Engineering}, volume = {5 (4)}, year = {2017}, pages = {2897{\textendash}2905}, author = {Hsin-Chih Huang and Sun-Tang Chang and Hsin-Cheng Hsu and He-Yun Du and Chen-Hao Wang and Li-Chyong Chen and Kuei-Hsien Chen} } @article {2855, title = {Synthesis and Properties of Poly(ether sulfone)s with Clustered Sulfonic Groups for PEMFC Applications under Various Relative Humidity}, journal = {ACS Appl. Mater. Interfaces}, volume = {9}, year = {2017}, pages = {9805{\textendash}9814}, author = {Shih-Wei Lee and Jyh-Chien Chen and Jin-An Wu and Kuei-Hsien Chen} } @article {3856, title = {Beaded stream-like CoSe2 nanoneedle array for efficient hydrogen evolution electrocatalysis}, journal = {Journal of Materials Chemistry A}, volume = {4}, year = {2016}, note = {n/a}, month = {2016}, pages = {4553 - 4561}, publisher = {The Royal Society of Chemistry}, abstract = {

The development of earth-abundant and efficient electrocatalysts for the hydrogen evolution reaction (HER) is one of the keys to success for future green energy systems using hydrogen fuel. Nanostructuring of electrocatalysts is a promising way to enhance their electrocatalytic performance in the HER. In this study, pure pyrite-type beaded stream-like cobalt diselenide (CoSe2) nanoneedles are directly formed on flexible titanium foils through treating a cobalt oxide (Co3O4) nanoneedle array template with selenium vapor. The beaded stream-like CoSe2 nanoneedle electrode can drive the HER at a current density of 20 mA cm-2 with a small overpotential of 125 mV. Moreover, the beaded stream-like CoSe2 nanoneedle electrode remains stable in an acidic electrolyte for 3000 cycles and continuously splits water over a period of 18 hours. The enhanced electrochemical activity is facilitated by the unique three-dimensional hierarchical structure, the highly accessible surface active sites, the improved charge transfer kinetics and the highly attractive force between water and the surface of the nanoneedles that exceeds the surface tension of water.

}, isbn = {2050-7488}, url = {http://dx.doi.org/10.1039/C6TA00464D}, author = {Chuan-Pei Lee and Wei-Fu Chen and Tadesse Billo and Yan-Gu Lin and Fang-Yu Fu and Satyanarayana Samireddi and Chih-Hao Lee and Jih-Shang Hwang and Kuei-Hsien Chen and Li-Chyong Chen} } @article {3852, title = {Thermoelectric Properties of Indium and Gallium Dually Doped ZnO Thin Films}, journal = {ACS Applied Materials \& InterfacesACS Applied Materials \& Interfaces}, volume = {8}, year = {2016}, note = {

doi: 10.1021/acsami.6b10591

}, month = {2016}, pages = {33916 - 33923}, publisher = {American Chemical Society}, abstract = {n/a}, isbn = {1944-8244}, url = {https://doi.org/10.1021/acsami.6b10591}, author = {Tran Nguyen, Nhat Hong and Nguyen, Truong Huu and Liu, Yi-ren and Aminzare, Masoud and Pham, Anh Tuan Thanh and Cho, Sunglae and Deniz P. Wong and Kuei-Hsien Chen and Seetawan, Tosawat and Pham, Ngoc Kim and Ta, Hanh Kieu Thi and Tran, Vinh Cao and Phan, Thang Bach} } @article {3850, title = {Thickness-Dependent Binding Energy Shift in Few-Layer MoS2 Grown by Chemical Vapor Deposition}, journal = {ACS Applied Materials \& InterfacesACS Applied Materials \& Interfaces}, volume = {8}, year = {2016}, note = {

doi: 10.1021/acsami.6b06615

}, month = {2016}, pages = {22637 - 22646}, publisher = {American Chemical Society}, abstract = {n/a}, isbn = {1944-8244}, url = {https://doi.org/10.1021/acsami.6b06615}, author = {Lin, Yu-Kai and Ruei-San Chen and Tsu-chin Chou and Yi-Hsin Lee and Yang-Fang Chen and Kuei-Hsien Chen and Li-Chyong Chen} } @article {2571, title = {Beaded-stream-like CoSe2 nanoneedles array for efficient hydrogen evolution electrocatalysis}, journal = {J. Mater. Chem. A }, volume = {4 }, year = {2016}, pages = {4553-4561}, author = {C.P. Lee and W.F. Chen* and T. Billo and Y.G. Lin and F.Y. Fu and S. Samireddi and Lee, C. H. and J.S. Hwang and L.C. Chen* and K.H. Chen*} } @article {2858, title = {Enhanced solar cell performance of Cu2ZnSn(S,Se)4 thin films through structural control by using multi-metallic stacked nanolayers and fast ramping process for sulfo-selenization}, journal = {Nano Energy}, volume = {30}, year = {2016}, pages = {762-770}, author = {Wei-ChaoChen and Cheng-YingChen and Venkatesh Tunuguntla and Shao HungLu and ChaochinSu and Chih-Hao Lee and Kuei-Hsien Chen and Li-Chyong Chen} } @article {2578, title = {Enhanced thermoelectric performance in percolated bismuth sulfide composite}, journal = {RSC Advances }, volume = {6}, year = {2016}, pages = {98952}, author = {D. P. Wong and C.Y. Huang and W.L. Chien and C.E. Chang and A. Ganguly and L.M. Lyu and J.S. Hwang and L. C. Chen and K. H. Chen} } @article {2574, title = {Fabrication of Cu2ZnSnSe4 solar cells through multi-step selenization of layered metallic precursor film}, journal = {Thin Solid Films }, year = {2016}, author = {W.C. Chen and V. Tunuguntla and Li, H. W. and C.Y. Chen and S.S. Li and J.S. Hwang and Lee, C. H. and L. C. Chen and K. H. Chen} } @article {2573, title = {Improving the thermoelectric performance of metastable rock-salt GeTe-rich Ge-Sb-Te thin films through tuning of grain orientation and vacancies}, journal = {Physica Status Solidi A }, year = {2016}, pages = {1-8}, author = {I.N. Chen and C.W. Chong and L.M. Lyu and D. P. Wong and W.L. Chien and A. Anbu and Y.F. Chen and L. C. Chen and K. H. Chen} } @article {2575, title = {Nonlinear opening of the band gap of BN-co-doped graphene}, journal = {Carbon}, year = {2016}, author = {B.-Y. Wang and H. T. Wang and L.-Y. Chen and H. C. Hsueh and J.W. Chiou and W.-H. Wang and P. H. Wang and K.-H. Chen and Y.-C. Chen and L.-C. Chen and C.-H. Chen and W.F. Pong and J. Wang and J.-H. Guo} } @article {2570, title = {Scanning microwave microscope imaging of micro-patterned monolayer graphene grown by chemical vapor deposition}, journal = {Applied Physics Letters }, volume = {108}, year = {2016}, pages = {053101}, author = {J. Myers and S. Mou* and K. H. Chen and Y. Zhuang} } @article {3846, title = {Conducting polymer-based flexible supercapacitor}, journal = {Energy Science \& EngineeringEnergy Science \& Engineering}, volume = {3}, year = {2015}, note = {

doi: 10.1002/ese3.50

}, month = {2015}, pages = {2 - 26}, publisher = {John Wiley \& Sons, Ltd}, abstract = {

Abstract Flexible supercapacitors, a state-of-the-art material, have emerged with the potential to enable major advances in for cutting-edge electronic applications. Flexible supercapacitors are governed by the fundamentals standard for the conventional capacitors but provide high flexibility, high charge storage and low resistance of electro active materials to achieve high capacitance performance. Conducting polymers (CPs) are among the most potential pseudocapacitor materials for the foundation of flexible supercapacitors, motivating the existing energy storage devices toward the future advanced flexible electronic applications due to their high redox active-specific capacitance and inherent elastic polymeric nature. This review focuses on different types of CPs-based supercapacitor, the relevant fabrication methods and designing concepts. It describes recent developments and remaining challenges in this field, and its impact on the future direction of flexible supercapacitor materials and relevant device fabrications.

}, keywords = {Charge storage, conducting polymers, electro active materials, flexible supercapacitor, pseudocapacitor}, isbn = {2050-0505}, url = {https://doi.org/10.1002/ese3.50}, author = {Indrajit Shown and Abhijit Ganguly and Li-Chyong Chen and Kuei-Hsien Chen} } @article {2566, title = {Comparison of CVD- and MBE-grown GaN nanowires: crystallinity, photoluminescence, and photoconductivity}, journal = {J. Electronic Mater. }, volume = {44 }, year = {2015}, pages = {177}, author = {R. S. Chen* and H. Y. Tsai and C. H. Chan and Y.S. Huang and Y. T. Chen and K. H. Chen and L. C. Chen} } @article {2559, title = {Design for approaching cicada-wing reflectance in low and high index biomimetic nanostructures}, journal = {ACS Nano }, volume = {9}, year = {2015}, pages = {301-311}, author = {Y.F. Huang and Y.J. Jen and L. C. Chen and K. H. Chen and S. Chattopadhyay} } @article {2560, title = {Functionalizing biomaterials to be an efficient proton-exchange membrane and methanol barrier for DMFCs}, journal = {ACS Sustainable Chemistry \& Engineering }, volume = {3}, year = {2015}, pages = {302}, author = {S. K. Nataraj and C. H. Wang and H. C. Huang and H. Y. Du and L. C. Chen and K. H. Chen} } @article {2564, title = {Nano-textured Fluidic Biochip as Biological Filter for Selective Survival of Neuronal Cells}, journal = {J. Biomed. Mater. Res. A }, volume = {103}, year = {2015}, pages = {2015}, author = {H.C. Han and H.C. Lo and C. Y. Wu and K. H. Chen and L. C. Chen and K. L. Ou and H. Hosseinkhani*} } @article {2567, title = {Pulsed electrochemical deposition of Pt NPs on polybenzimidazole-CNT hybrid electrode for high-temperature proton exchange membrane fuel cells}, journal = {International Journal of Hydrogen Energy}, volume = { 40}, year = {2015}, pages = {14398}, author = {H. Y. Du and C.S. Yang and H.-C. Hsu and H. C. Huang and S.T. Chang and C.-H. Wang and J.-C. Chen and K. H. Chen and L. C. Chen} } @article {2550, title = {Binder-free rice husk-based silicon-graphene composite as energy efficient Li-ion battery anodes}, journal = {J. Mater. Chem. A}, volume = {2}, year = {2014}, pages = {13437-13441}, author = {D. P. Wong and R. Suriyaprabha and R. Yuvakumar and V. Rajendran and Y. T. Chen and Hwang, B J. and L. C. Chen and K. H. Chen} } @article {2551, title = {Characterization of the cleaning process on a transferred graphene}, journal = {J. Vac. Sci. Tech. A }, volume = {32}, year = {2014}, pages = {050601}, author = {Huang, L. W. and C.K. Chang and F.C. Chien and K. H. Chen and P. Chen and F.R. Chen and Chang, C. S.} } @article {2554, title = {Effect of copper oxide oxidation state on the polymer-based solar cell buffer layers}, journal = {ACS Appl. Mater. \& Inter. }, year = {2014}, author = {H. T. Lien and D. P. Wong and N.H. Tsao and C.I. Huang and Su, C. and K. H. Chen and L. C. Chen} } @article {2557, title = {Hierarchically porous Ca-containing MnO2 nanorod bundles with superior photoelectrochemical activity}, journal = {ChemCatChem }, volume = {6}, year = {2014}, pages = { 1684}, author = {Y.G. Lin and Y. C. Chen and J.T. Miller and L. C. Chen and K. H. Chen and Y.K. Hsu} } @article {2548, title = {A high performance polybenzimidazole-CNT hybrid electrode for high-temperature proton exchange membrane fuel cells}, journal = {J. of Mater. Chem. }, volume = {2}, year = {2014}, pages = {7015-7019 }, author = {H. Y. Du and C. H. Wang and C.S. Yang and H. C. Hsu and S.T. Chang and H. C. Huang and S.W. Lai and J.C. Chen and T. Leon Yu and L. C. Chen and K. H. Chen} } @article {2549, title = {Novel iron oxyhydroxide lepidocrocite nanosheet as ultrahigh power density anode material for asymmetric supercapacitors}, journal = {Small }, volume = {10}, year = {2014}, pages = {3803{\textendash}3810}, author = {Y. C. Chen and Y.G. Lin and Y.K. Hsu and S.C. Yen and K. H. Chen and L. C. Chen} } @article {2553, title = {Optical properties of plasma-assisted molecular beam epitaxy grown InN/Sapphire}, journal = {Opt. Mater. }, volume = {37}, year = {2014}, pages = {1}, author = {D.N. Talwa and Y.C. Liao and L. C. Chen and K. H. Chen and Z.C. Feng} } @article {2552, title = {Plasmon management in index engineered 2.5D hybrid nanostructures for SERS}, journal = {NPG Asia Materials}, volume = { 6}, year = {2014}, pages = { e123}, author = {Y.F. Huang and C.Y. Chen and L. C. Chen and K. H. Chen and S. Chattopadhyay} } @article {2556, title = {SIMS methodology for probing the fate and dispersion of catalytically active molecules}, journal = {Intl. J. Mass Spectrometry }, volume = {370}, year = {2014}, pages = {107-113}, author = {C.K. Liang and S.T. Chang and S.V. Verkhoturov and L. C. Chen and K. H. Chen and E.A. Schweikert*} } @article {2555, title = {Surface diffusion controlled formation of high quality vertically aligned InN nanotubes}, journal = {J. Appl. Phys.}, volume = {116}, year = {2014}, pages = {124301}, author = {Wei, P. C. and K. H. Chen and L. C. Chen} } @article {1758, title = {Anomalous quantum efficiency for photoconduction and its power dependence in metal oxide semiconductor nanowires}, journal = {Nanoscale}, volume = {5}, year = {2013}, pages = {6867-6873}, author = {R. S. Chen and W. C. Wang and C. H. Chan and M. L. Lu and Y.F. Chen and H. C. Lin and K. H. Chen and L. C. Chen} } @article {1759, title = {Atomistic nucleation sites of Pt nanoparticles on N-doped carbon nanotubes}, journal = {Nanoscale}, volume = {5}, year = {2013}, pages = {6812-6818}, author = {Y.L. Liu and C. W. Hsu and S. Dhara and C. W. Chang and H. M. Tsai and L. C. Chen and K. H. Chen and W.F. Pong* and G. C. Chi} } @article {1753, title = {Band gap engineering of chemical vapor deposited graphene by in-situ BN doping}, journal = {ACS Nano}, volume = {7}, year = {2013}, pages = {1333-1341}, author = {C.K. Chang and S. Kataria and Kuo, C. C. and A. Ganguli and B.Y. Wang and J. Y. Hwang and K.J. Huang and W.H. Yang and S.B. Wang and C.H. Chuang and M. Chen and C.I. Huang and W.F. Pong and K.J. Song and S.J. Chang and J. Guo and Y. Tai and M. Tsujimoto and S. Isoda and C. W. Chen and L. C. Chen and K. H. Chen} } @article {1757, title = {Effect of chemical doping of boron and nitrogen on the electronic, optical, and electrochemical properties of carbon nanotubes}, journal = {Progress in Materials Science}, volume = {58}, year = {2013}, pages = {565{\textendash}635}, author = {D. Jana and C. L. Sun and L. C. Chen and K. H. Chen} } @article {1752, title = {Graphene Oxide based Photocatalyst for CO2 to Methanol Conversion}, journal = {Nanoscale}, volume = {5}, year = {2013}, pages = {262-268}, author = {H. C. Hsu and Indrajit Shown and H.Y. Wei and Chang, Y. C. and H. Y. Du and Y.G. Lin and C. H. Wang and L. C. Chen and Lin, Y. C. and K. H. Chen} } @article {211, title = {Growth of β-Ga2O3 and GaN nanowires on GaN for photoelectrochemical hydrogen generation}, journal = { Nanotechnology}, volume = {24}, year = {2013}, pages = {055401}, author = {Jih-Shang Hwang and Tai-Yan Liu and Surjit Chattopadhyay and Geng-Ming Hsu and Antonio M Basilio and Han-Wei Chen and Yu-Kuei Hsu and Wen-Hsun Tu and Yan-Gu Lin and Kuei-Hsien Chen and Chien-Cheng Li and Sheng-Bo Wang and Hsin-Yi Chen and Li-Chyong Chen} } @article {1756, title = {High K nanophase zinc oxide on biomimetic silicon nanotip array as super-capacitors}, journal = {Nano Letters}, volume = {13}, year = {2013}, pages = {1422-1428}, author = {H.C. Han and C.W. Chong and S.B. Wang and D. Heh and C.A. Tseng and Y.F. Huang and S. Chattopadhyay and K. H. Chen and C.F. Lin and J.H. Lee and L. C. Chen} } @article {1746, title = {Imaging layer number and stacking order through formulating Raman fingerprints obtained from hexagonal single crystals of few layer graphene}, journal = {Nanotechnology}, volume = {24}, year = {2013}, pages = {015702}, author = {J.S. Hwang and Lin, Y. H. and J. Y. Hwang and R. Chang and S. Chattopadhyay and C.J. Chen and P. Chen and H. P. Chiang and T.R. Tsai and L. C. Chen and K. H. Chen} } @article {1755, title = {Surface plasmon-enhanced gas sensing in single gold peapodded-silica nanowire}, journal = {Asia Materials}, year = {2013}, author = {S.B. Wang and Y.F. Huang and S. Chattopadhyay and S.J. Chang and R. S. Chen and C.W. Chong and M.S. Hu and L. C. Chen and K. H. Chen} } @article {1754, title = {Using optical anisotropy as a quality factor to rapidly characterize structural qualities of large-area graphene films}, journal = {Analytical Chemistry}, year = {2013}, author = {Y.L. Liu and C. C. Yu and C.Y. Fang and H.L. Chen and C. W. Chen and Kuo, C. C. and C.K. Chang and L. C. Chen and K. H. Chen} } @article {1741, title = {Effect of substrate bias on the promotion of nanocrystalline silicon growth from He-diluted SiH4plasma at low temperature}, journal = {J. Mater. Res.}, volume = {27}, year = {2012}, pages = {1303}, author = {D. Das and D. Raha and W.C. Chen and K. H. Chen and C. T. Wu and L. C. Chen} } @article {1729, title = {Effect of substrate temperature on orientation of subphthalocyanine molecule in organic photovoltaic cells}, journal = {Thin Solid Films}, volume = {520}, year = {2012}, pages = {2289-2292}, author = {C.T. Chou and W.L. Tang and Lin, C. H. and C.H. Liu and L. C. Chen and K. H. Chen} } @article {1745, title = {Enhancing efficiency with fluorinated interlayer in small molecule organic solar cell}, journal = {J. Mater. Chem.}, volume = {22}, year = {2012}, pages = {22899}, author = {H.C. Han and C.A. Tseng and C.Y. Du and A.Ganguly and C.W. Chong and S.B. Wang and C.F. Lin and S.H. Chang and C.C. Su and J.H. Lee and K. H. Chen and L. C. Chen} } @article {1736, title = {Gold nanoparticles-modulated conductivity in gold peapodded silica nanowire}, journal = {Nanoscale}, volume = {4}, year = {2012}, pages = {3660-3664}, author = {S.B. Wang and S.J. Chang and M.S. Hu and C.W. Chong and B.R. Huang and K. H. Chen and L. C. Chen} } @article {1737, title = {Growth of sparse arrays of narrow GaNnanorods hosting spectrally stable InGaNquantum disks}, journal = {Opt. Express}, volume = {20}, year = {2012}, pages = {16166-16173 }, author = {Y. T. Chen and W.C. Tsai and W.Y. Chen and C. L. Hsiao and H. C. Hsu and W.H. Chang and T.M. Hsu and K. H. Chen and L. C. Chen} } @article {209, title = {High-cell-voltage supercapacitor of carbon nanotube/carbon cloth operating in neutral aqueous solution}, journal = {Journal of Materials Chemistry}, volume = {22}, year = {2012}, pages = {3383-3387}, author = {Yu-Kuei Hsu and Ying-Chu Chen and Yan-Gu Lin and Li-Chyong Chen and Kuei-Hsien Chen} } @article {1733, title = {Highly proton-selective biopolymer layer-coated ion-exchange membrane for direct methanol fuel cells}, journal = {ChemSusChem.}, volume = {5}, year = {2012}, pages = {392-395 }, author = {S. K. Nataraj and C. H. Wang and H. C. Huang and H. Y. Du and S. F. Wang and Y. C. Chen and L. C. Chen and K. H. Chen} } @article {1738, title = {Magnetic-field and temperature dependence of the energy gap in InN nanobelt}, journal = {AIP Advances}, volume = {2}, year = {2012}, pages = {012155}, author = {K. Aravind and Y.W. Su and D. S. Chun and Watson Kuo and C. S. Wu and K. S. Chang-Liao and K. H. Chen and L. C. Chen and C. D. Chen} } @article {208, title = {Patterned growth of nanocrystalline silicon thin films through magnesiothermic reduction of soda lime glass}, journal = {Green Chemistry}, volume = {14}, year = {2012}, pages = {896-900}, author = {D. P. Wong and H. T. Lien and Y. T. Chen and K. H. Chen and L. C. Chen} } @article {1747, title = {Photochemically active reduced graphene oxide with controllable oxidation level}, journal = {RSC Advances}, volume = {2}, year = {2012}, pages = {11258-11562}, author = {Y.G. Lin* and C.K. Lin* and J.T. Miller and Y.K. Hsu and Y. C. Chen and L. C. Chen and K. H. Chen} } @article {1742, title = {Photoconduction efficiencies in GaN nanowires grown by chemical vapor deposition and molecular beam epitaxy: acomparison study}, journal = {Appl. Phys. Lett.}, volume = {101}, year = {2012}, pages = {113109}, author = {R. S. Chen and H. Y. Tsai and Y.S. Huang and Y. T. Chen and L. C. Chen and K. H. Chen} } @article {1743, title = {Plasmonic Ag@Ag3PO4 Nanoparticle Photosensitized ZnO Nanorod-Array Photoanodes for Water Oxidation}, journal = {Energy \& Environ. Sci.}, volume = {5}, year = {2012}, pages = {8917-8922}, author = {Y.G. Lin and Y.K. Hsu and S.B. Wang and Y. C. Chen and L. C. Chen and K. H. Chen} } @article {1739, title = {Polarized emission and excitonic fine structure energies of InGaN quantum dots}, journal = {Physica B-Condensed Matter}, volume = {407}, year = {2012}, pages = {1553}, author = {K. F. Karlsson and S. Amloy and Y. T. Chen and K. H. Chen and H. C. Hsu and C. L. Hsiao and L. C. Chen and P. O. Holtz} } @article {210, title = {Pyrolyzed Cobalt Corrole as a Potential Non-Precious Catalyst for Fuel Cells}, journal = {Adv. Funct. Mater.}, volume = {22}, year = {2012}, pages = {3500{\textendash}3508}, author = {Hsin-Chih Huang and Indrajit Shown and Sun-Tang Chang and Hsin-Cheng Hsu and He-Yun Du and Ming-Cheng Kuo and Ken-Tsung Wong and Sea-Fu Wang and Chen-Hao Wang and Li-Chyong Chen and Kuei-Hsien Chen} } @article {1731, title = {Spontaneous synthesis and electrochemical characterization of nanostructured MnO2 on nitrogen-incorporated carbon nanotubes}, journal = {Int. J. of Electrochem.}, year = {2012}, author = {Y. C. Chen and Y.K. Hsu and Y.G. Lin and L. C. Chen and K. H. Chen} } @article {1735, title = {Stacking orientation mediation of pentacene and derivatives for highopen-circuit voltage organic solar cells}, journal = {J. Phys. Chem. Lett.}, volume = {3}, year = {2012}, pages = {1079-1083}, author = {C.T. Chou and Lin, C. H. and Y. Tai and C.H.Liu and L. C. Chen and K. H. Chen} } @article {1740, title = {Stand-up structure of graphene-like carbon nanowalls on CNT directly grown on polyacrylonitrile-based carbon fiber paper as supercapacitor}, journal = {Diamond Relat. Mater.}, volume = {25}, year = {2012}, pages = {176}, author = {H. C. Hsu and C.H. Wang* and S. K. Nataraj and H. C. Huang and H. Y. Du and S.T. Chang and L. C. Chen and K. H. Chen} } @article {1732, title = {Studies of electronic excitations of rectangular ZnOnanorods by electron energy-loss spectroscopy}, journal = {Plasmonics}, volume = {7}, year = {2012}, pages = {123-130}, author = {C. T. Wu and M.W. Chu and C.P. Liu and K. H. Chen and L. C. Chen and C. W. Chen and Chen, C. H.} } @article {1734, title = {Tunable photoluminescence from graphene oxide}, journal = {Angewandte Chemie}, volume = {51}, year = {2012}, pages = {6662-6666}, author = {C.T. Chien and S.S. Li and W.J. Lai and Y.C. Yeh and H.A. Chen and L. C. Chen and K. H. Chen and T.Nemoto and S. Isoda and M. Chen and T. Fujita and M. Chhowalla and C. W. Chen} } @article {1744, title = {Visible-light-driven photocatalytic carbon-doped porous ZnO nanoarchitectures for solar water-splitting}, journal = {Nanoscale}, volume = {4}, year = {2012}, pages = {6515-6519}, author = {Y.G. Lin and Y.K. Hsu and Y. C. Chen and Chen, S. Y. and L. C. Chen and K. H. Chen} } @article {1730, title = {Vitalizing fuel cells with a vitamin: pyrolyzed vitamin B12 as non-precious catalyst for enhanced oxygen reduction reaction}, journal = {Energy \& Environ. Sci.}, volume = {5}, year = {2012}, pages = {5305-5314}, author = {S.T. Chang and C. H. Wang and H. Y. Du and H. C. Hsu and C.M. Kang and Chen, C. C. and C. S. Wu and S.C. Yen and W.F. Huang and L. C. Chen and M. C. Lin and K. H. Chen} } @article {1707, title = {Array of CdSe QD-sensitized ZnO nanorods serves as photoanode for water splitting}, journal = {Chem. Commun.}, volume = {47}, year = {2011}, pages = {3493-3495}, author = {N. Chouhan and C.L. Yeh and S.F. Hu and J. H. Huang and R.S. Liu and W.S. Chang and K. H. Chen} } @article {1709, title = {Au nanoparticle modified GaN photoelectrode for photoelectrochemical hydrogen generation}, journal = {Electrochem. Comm.}, volume = {13}, year = {2011}, pages = {530-533}, author = {W.H. Tu and Y.K. Hsu and C.H. Yen and C.I. Wu and J.S. Hwang and L. C. Chen and K. H. Chen} } @article {1699, title = {Catalytic performance of plate-type Cu/Fe nanocomposites on ZnO nanorods for oxidative steam reforming of methanol}, journal = {Chem. Comm.}, volume = {47}, year = {2011}, pages = {1473-1475}, author = {C.C. Li and R.J. Lin and Lin, H. P. and Chang, C. C. and Y.K. Lin and L. C. Chen and K. H. Chen} } @article {1706, title = {Controlled growth of aligned Alpha-helical polypeptide brushes for tunable electrical conductivity}, journal = {,Appl. Phys. Lett.}, volume = {98}, year = {2011}, pages = {133304}, author = {J.C. Wu and Chen, C. C. and K. H. Chen and Y.C. Chang*} } @article {1727, title = {Electron field emission properties of highly dense carbonnanotube arrays}, journal = {Appl. Phys. A}, volume = {105}, year = {2011}, pages = {11}, author = {S.M. Pimenov and V.D. Frolov and E.V. Zavedeev and N.P. Abanshin and H. Y. Du and W.C. Chen and L. C. Chen and J.J. Wu and K. H. Chen} } @article {1713, title = {Energy production and conversion applications ofone-dimensional semiconductor nanostructures}, journal = {NPG Asia Mater.}, volume = {3}, year = {2011}, pages = {74-81}, author = {S. Chattopadhyay and L. C. Chen and K. H. Chen} } @article {1703, title = {Giant room temperature electric-field-assisted magnetoresistance in La0.7Sr0.3MnO3/n-Si nanotips heterojunctions}, journal = {Nanotechnology}, volume = {22}, year = {2011}, pages = {125701}, author = {C.W. Chong and D. Hsu and W.C. Chen and C.C. Li and Y.F. Huang and H.C. Han and J.G. Lin and L. C. Chen and K. H. Chen and Y.F. Chen} } @article {1701, title = {High performance of catalysts supported by directly grown PTFE-free micro-porous CNT layer in a proton exchange membrane fuel cell}, journal = {J. Mater. Chem.}, volume = {21}, year = {2011}, pages = {2512-2516}, author = {H. Y. Du and C. H. Wang and H. C. Hsu and S.T. Chang and S.C. Yen and L. C. Chen and B. Viswanathan and K.H. Chen*} } @article {1710, title = {Highly flexible supercapacitors with manganese oxide nanosheet/carbon cloth electrode}, journal = {Electrochem. Acta}, volume = {56}, year = {2011}, pages = {7124-7130}, author = {Y. C. Chen and Y.K. Hsu and Y.G. Lin and Y.K. Lin and Y.Y. Horng and L. C. Chen and K. H. Chen} } @article {1702, title = {Label free sub-picomole level DNA detection with Ag nanoparticle decorated Au nanotip arrays as surface enhanced Raman spectroscopy platform}, journal = {Biosensors and Bioelectronics}, volume = {26}, year = {2011}, pages = {2413-2418}, author = {H.C. Lo and H.I. Hsiung and S. Chattopadhyay and H.C. Han and C.F. Chen and J.P. Leu and K. H. Chen and L. C. Chen} } @article {1719, title = {Low-frequency contact noise of GaN nanowire device detected by cross-spectrum technique}, journal = {J. J. App. Phys.}, volume = {50}, year = {2011}, pages = {06GF21}, author = {Liang-Chen Li and Kuo-Hsun Huang and Jia-An Wei and Yuen-Wuu Suen and Ting-Wei Liu and Chia-Chun Chen and Li-Chyong Chen and Kuei-Hsien Chen} } @article {1700, title = {Microwave-activated CuO nanotip/ZnO nanorod nanoarchitectures embedded in a microreactor for efficient hydrogen production}, journal = { J. Mater. Chem.}, volume = {21}, year = {2011}, pages = {324-326 }, author = {Y.G. Lin and Y.K. Hsu and Y.K. Lin and Chen, S. Y. and L. C. Chen and K.H. Chen*} } @article {1721, title = {Multi-bandgap-sensitized ZnO nanorod photoelectrode arrays for water splitting: an X-ray absorption spectroscopy approach for the electronic evolution under solar illumination}, journal = {J. Phys. Chem. C}, volume = {115}, year = {2011}, pages = {21971-21980 }, author = {H.M. Chen and C.K. Chen and C.C. Lin and R.S. Liu and H. Yang and W.S. Chang and K. H. Chen and T.S. Chan and J.F. Lee and D.P. Tsai} } @article {1722, title = {A new approach to solar hydrogen production: a ZnO{\textendash}ZnS solid solution nanowire array photoanode}, journal = {Advanced Energy Materials}, volume = {1}, year = {2011}, pages = {742-747}, author = {H.M. Chen and C.K. Chen and R.S. Liu and C. C. Wu and W.S. Chang and K. H. Chen and T.S. Chan and J.F. Lee and D.P. Tsai} } @article {1704, title = {Optical properties of functionalized GaN nanowires}, journal = {J. Appl. Phys.}, volume = {109}, year = {2011}, pages = {053523}, author = {C. W. Hsu and A.Ganguly and C.P. Chen and Kuo, C. C. and P.P. Paskov and Per Olof Holtz and K. H. Chen and L. C. Chen} } @article {1723, title = {Origin and tuning of surface optic and long wavelength phonons in biomimetic GaAs nanotip arrays}, journal = {Optical Materials Express}, volume = {1}, year = {2011}, pages = {535}, author = {Yi-Fan Huang and Surojit Chattopadhyay* and Hsu-Cheng Hsu and Chien-Ting Wu and Kuei-Hsien Chen and Li-Chyong Chen} } @article {1718, title = {Oxygen reducing activity of methanol-tolerant catalysts by high-temperature pyrolysis}, journal = {Diamond \& Relat. Mater.}, volume = {20}, year = {2011}, pages = {322}, author = {Chen-Hao Wang and Sun-Tang Chang and Hsin-Cheng Hsu and He-Yun Du and Jeffrey Chi-Sheng Wu and Li-Chyong Chen and Kuei-Hsien Chen*} } @article {1715, title = {Photoconduction and the electronic structure of silica nanowires embedded with gold nanoparticles}, journal = {Phys. Rev. B}, volume = {84}, year = {2011}, pages = {165412 }, author = {C.-W. Pao and C.-T. Wu and H.-M. Tsai and Y.-S. Liu and C.-L. Chang and W.F. Pong and J.-W. Chiou and C.-W. Chen and M.-S. Hu and M.-W. Chu and L.-C. Chen and C.-H. Chen and K.-H. Chen and S.-B. Wang and S.-J. Chang and M.-H. Tsai and H.-J. Lin and J.-F. Lee and J.-H. Guo} } @article {1728, title = {Photoconduction mechanism of oxygen sensitization in InN nanowires}, journal = {Nanotechnology}, volume = {22}, year = {2011}, pages = { 425702 }, author = {R. S. Chen*, ,, ,, , , and T. H. Yang and H.Y. Chen and L. C. Chen and K.H. Chen* and Y.J. Yang and C.H. Su and C.R. Lin} } @article {1720, title = {Photocurrent mapping in high efficiency radial p-n junction silicon nanowire solar cells using atomic force microscopy}, journal = {J. Phys. Chem. C}, volume = {115}, year = {2011}, pages = {21981-21986}, author = {J.S. Hwang and M.C. Kao and J.M. Shiu and C.N. Fan and S.C. Ye and W.S. Yu and T.Y. Lin and S. Chattopadhyay and L. C. Chen and K. H. Chen} } @article {1705, title = {Polarization resolved fine structure splitting of zero-dimensional InGaN excitons}, journal = {Phys. Rev. B}, volume = {83}, year = {2011}, pages = {201307}, author = {S. Amloy and Y. T. Chen and K. F. Karlsson and K. H. Chen and H. C. Hsu and C. L. Hsiao and L. C.Chen and P. O. Holtz*} } @article {1711, title = {The production of SiC nanowalls sheathed with a few layers of strained graphene and their use in heterogeneous catalysis and sensing applications}, journal = {Carbon}, volume = {49}, year = {2011}, pages = {4911-4919}, author = {M.S. Hu and Kuo, C. C. and C. T. Wu and C. W. Chen and P. K. Ang and K.P. Loh and K. H. Chen and L. C. Chen} } @article {1726, title = {Raman scattering and Rutherford backscattering studies on InN films grown byplasma-assisted molecular beam epitaxy}, journal = {Thin Solid Films}, volume = {519}, year = {2011}, pages = { 6778}, author = {Yee Ling Chung and Xingyu Peng and Ying Chieh Liao and Shude Yao and Li-Chyong Chen and Kuei-Hsien Chen and Zhe Chuan Feng} } @article {1698, title = {Reversible phase transformation of MnO2nanosheets in electrochemical capacitor investigated by in-situ Raman spectroscopy}, journal = {Chem. Comm.}, volume = {47}, year = {2011}, pages = {1252-1254}, author = {Y.K. Hsu and Y. C. Chen and Y.G. Lin and L. C. Chen and K. H. Chen} } @article {1712, title = {Self-reductive mesoporous CuOx/Fe/silicate nanocomposite as a highly active and stable catalyst for methanol reforming}, journal = {Chem. Comm.}, volume = {47}, year = {2011}, pages = {9414-9416}, author = {C.C. Li and Y.W. Chen and R.J. Lin and Chang, C. C. and K. H. Chen and H.P.Lin and L. C. Chen} } @article {1724, title = {Size-dependent persistent photocurrent and surface band bending in m-axial GaN nanowires}, journal = {Phys. Rev. B}, volume = {84}, year = {2011}, pages = {205443}, author = {H.Y. Chen and R. S. Chen and N.K. Rajan and F.C. Chang and L. C. Chen and K. H. Chen and Y.J. Yang and Mark A. Reed} } @article {1714, title = {Top laminated graphene electrode in a semitransparent polymer solar cell by simultaneous thermal annealing/releasing method}, journal = {ACS Nano}, volume = {5}, year = {2011}, pages = {6564-6570}, author = {Y.Y. Lee and K.H. Tu and C. C. Yu and S.S. Li and J. Y. Hwang and C.C. Lin and K. H. Chen and L. C. Chen and H.L. Chen and C. W. Chen} } @article {1716, title = {Tuning energy-level in magnesium modified Alq3}, journal = {J. Appl. Phys.}, volume = {109}, year = {2011}, pages = {083541}, author = {Chien-Hung Lin and Wei-Ting Yeh and Chia-Liang Sun and Ji-Lin Shen and Jiun-Haw Lee and Li-Chyong Chen and Juen-Kai Wang and Kuei-Hsien Chen*} } @article {1717, title = {Tuning open-circuit voltage in organic solar cells by magnesium modified Alq3}, journal = {J. Appl. Phys.}, volume = {110}, year = {2011}, pages = {083104}, author = {C.T. Chou and Lin, C. H. and M.H. Wu and T.W. Cheng and J.H. Lee and C.H.J. Liu and Y. Tai and S. Chattopadhyay and Wang, J. K. and K. H. Chen and L. C. Chen} } @article {1725, title = {Two-domain formation during the epitaxial growth of GaN (0001) on c-plane Al2O3 (0001) by high power impulse magnetron sputtering}, journal = {J. Appl. Phys.}, volume = {110}, year = {2011}, pages = {123519}, author = {M. Junaid and D. Lundin and J. Palisaitis and C. L. Hsiao and V. Darakchieva and J. Jensen and P. O. A. Persson and P. Sandstrom and W.J. Lai and L. C. Chen and K. H. Chen and U. Helmersson and L. Hultman and J. Birch} } @article {1708, title = {Ultra-sensitive in situ label-free DNA detection using GaN nanowires-based extended-gate field-effect-transistor sensor}, journal = {Anal. Chem.}, volume = {83}, year = {2011}, pages = {1938-1943}, author = {C.P. Chen and A. Ganguly and R. S. Chen and Wolfgang Fischer and L. C. Chen and K. H. Chen} } @article {1682, title = {Anisotropic surface plasmon excitation in Au/silica nanowire}, journal = {Appl. Phys. Lett.}, volume = {96}, year = {2010}, pages = { 236106}, author = {C. T. Wu and C. W. Chen and M.S. Hu and K. H. Chen and L. C. Chen and M.W. Chu and Chen, C. H.} } @article {1697, title = {Array of CdSe QD-sensitized ZnO nanorods serves as photoanode for water splitting}, journal = {J. Electrochem. Soc.}, volume = {157}, year = {2010}, pages = {1430-1433}, author = {N. Chouhan and C.L. Yeh and S.F. Hu and J. H. Huang and C.W. Tsai and R.S. Liu and W.S. Chang and K. H. Chen} } @article {1676, title = {A complete Raman mapping of phase transitions in Si under indentation}, journal = {J. Raman Spectroscopy}, volume = {41}, year = {2010}, pages = {334}, author = {C. R. Das and H. C. Hsu and S. Dhara and A. K. Bhaduri and B. Raj and L. C. Chen and K. H. Chen and S. K. Albert and A. Ray and Y. Tzeng} } @article {1689, title = {Correlating defect density with carrier mobility in large-scaled graphene films: Raman spectral signatures for estimation of defect density}, journal = {Nanotechnology}, volume = {21}, year = {2010}, pages = {465705 }, author = {J. Y. Hwang and Kuo, C. C. and L. C. Chen and K. H. Chen} } @article {1684, title = {Direct observation of amophization in load rate dependent nanoindentation studies of crystalline Si}, journal = {Appl. Phys. Lett.}, volume = {96}, year = {2010}, pages = {253113}, author = {S. Dhara and C. W. Chang and H. M. Tsai and L.C. Chen* and K. H. Chen} } @article {1685, title = {Direct voltammetric sensing of L-cysteine atpristine GaN nanowires electrode}, journal = {Biosensors and Bioelectronics}, volume = {26}, year = {2010}, pages = {1688-1691}, author = {Y.T. Lai and A. Ganguly and C.P. Chen and K. H. Chen and L.C. Chen*} } @article {1683, title = {Effect of XeF laser treatment on structure of nanocrystalline diamond films}, journal = {Diamond \& Relat. Mater.}, volume = {19}, year = {2010}, pages = {445}, author = {B.R. Huang and S. Jou and Y.M. Wu and K. H. Chen and L. C. Chen} } @article {1680, title = {Effects of cathode buffer layers on the efficiency of bulk-heterojunction solar cells}, journal = {Appl. Phys. Lett.}, volume = {96}, year = {2010}, pages = {263506}, author = {Chang, C. C. and C.F. Lin and J.M. Chiou and T.H. Ho and Y. Tai and J.H. Lee and Y.F. Chen and Wang, J. K. and L. C. Chen and K.H. Chen*} } @article {1690, title = {Electrochemical Characterization of InN Thin Film for Biosensing Applications}, journal = {J. New Mat. Electrochem. Systems}, volume = {13}, year = {2010}, pages = {337-343}, author = {A. M. Basilio, ,, ,,,, and and Y.K. Hsu and Wei, P. C. and A. Ganguly and H. C. Shih and Y. T. Chen and L. C. Chen and K.H. Chen*} } @article {1673, title = {Flexible supercapacitor based on polyaniline nanowires/carbon cloth with both high gravimetric and area-normalized capacitance}, journal = {J. Power Sources}, volume = {195}, year = {2010}, pages = {4418-4422}, author = {Y.Y. Horng and Lu, Y. C. and Y.K. Hsu and Chen, C. C. and L. C. Chen and K.H. Chen*} } @article {1679, title = {Focused ion beam induced nanowelding and defect doping as building block for nanoscale electronics in GaN nanowires}, journal = {J. Phys. Chem.}, volume = { C114}, year = {2010}, pages = {15260}, author = {S. Dhara and L. C. Yao and C. T. Wu and C. W. Hsu and W. S. Tu and K. H. Chen and Wang, Y. L. and L. C. Chen} } @article {1696, title = {Growth orientation dependent hardness for epitaxial wurtzite InN films}, journal = {J. Nanosci. Nanotechnol.}, volume = {10}, year = {2010}, pages = {5170-5174}, author = {S. Kataria and T. W. Liu and C. L. Hsiao and S. Dhara and L. C. Chen and K. H. Chen and S. Dash and A. K. Tyagi} } @article {1675, title = {Heteroepitaxy of m-plane (1010) InN on (100)-LiAlO2 substrates and its strong anisotropic optical behaviors}, journal = {,J. Appl. Phys.}, volume = {107}, year = {2010}, pages = {073502}, author = {C. L. Hsiao and J. T. Chen and H. C. Hsu and Y.C. Liao and P.H. Tseng and Y. T. Chen and Z.C. Feng and L.W. Tu and M. C. Chou and L. C. Chen and K. H. Chen} } @article {1674, title = {Improving the photoelectrochemical and H2gas generation property of c-plane GaN thin film through crystallographic etching of the film}, journal = {J. Mater. Chem.}, volume = {20}, year = {2010}, pages = {8118-8125}, author = {A.M. Basilio and Y.K. Hsu and W.H. Tu and G. M. Hsu and L. C. Chen and K.H. Chen*} } @article {1688, title = {Influence of solvent on the dispersion of single-walled carbon nanotubes in polymer matrix and the photovoltaic performance}, journal = {J. Phys. Chem.}, volume = {C114}, year = {2010}, pages = { 10932-10936}, author = {C.K. Chang and J. Y. Hwang and W.J. Lai and C. W. Chen and C.I. Huang and K. H. Chen and L. C. Chen} } @article {1686, title = {Monolayer-quantum dots sensitized ZnO nanowires-array photoelectrodes: true efficiency for water splitting}, journal = {Angew. Chem. Int. Ed.}, volume = {49}, year = {2010}, pages = {5966-5969}, author = {H.M. Chen and C.K. Chen and Chang, Y. C. and C.W. Tsai and R.S. Liu and S.F. Hu and W.S. Chang and K. H. Chen} } @article {1695, title = {O2 plasma-activated CuO-ZnO inverse opals as high-performance methanol microreformer}, journal = {J. Mater. Chem.}, volume = {20}, year = {2010}, pages = {10611-10614 }, author = {Y.G. Lin and Y.K. Hsu and Chen, S. Y. and L. C. Chen and K.H. Chen*} } @article {1672, title = {Photoconductivity in single AlN nanowires by sub-bandgap excitation}, journal = {Appl. Phys. Lett.}, volume = {96}, year = {2010}, pages = {062104}, author = {H.M. Huang and R. S. Chen and H.Y. Chen and T. W. Liu and Kuo, C. C. and C.P. Chen and H. C. Hsu and L. C. Chen and K.H. Chen* and Y.J. Yang} } @article {1687, title = {Platinum nanoparticles embedded in nitrogen-containing complexes for high methanol-tolerant oxygen reduction activity}, journal = {J. Mater. Chem.}, volume = {20}, year = {2010}, pages = {7551-7557}, author = {C. H. Wang and H. C. Hsu and S.T. Chang and H. Y. Du and Wu, C. H. and H. C. Shih and L. C. Chen and K.H. Chen*} } @article {1677, title = {Preparation of silver nano-particle decorated silica nanowires on quartz as reusable versatile nano-structured surface-enhanced Raman scattering substrates}, journal = {Nanotechnology}, volume = {21}, year = {2010}, pages = {025502}, author = {J. S. Hwang*,, , , , ,, and , , and K. Y. Chen and W. S. Syu and S. W. Chen and C. W. Kuo and W. Y. Syu and T.Y. Lin and H. P. Chiang and S. Chattopadhyay and K. H. Chen and L. C. Chen} } @article {1678, title = {Room-temperature negative photoconductivity in degenerate InN thin films with a supergap excitation}, journal = {Phys. Rev.}, volume = {B 81}, year = {2010}, pages = { 045306}, author = {Wei, P. C. and S. Chattopadhyay and C.Y. Lu and C. L. Hsiao and H. C. Shih and L. C. Chen and K. H. Chen} } @article {1681, title = {Spectroscopic characterizations of individual single-crystalline GaN nanowires in visible/ultra-violet regime}, journal = {Micron}, volume = {41}, year = {2010}, pages = {827-832}, author = {C. T. Wu and M.W. Chu and L. C. Chen and K. H. Chen and C. W. Chen and Chen, C. H.} } @article {1662, title = {Coulomb blockade behavior in an indium nitride nanowire with disordered surface states}, journal = {Appl. Phys. Lett.}, volume = {95}, year = {2009}, pages = { 092110-(1-3)}, author = {K. Aravind and Y.W. Su and I. L. Ho and C. S. Wu and K. S. Chang-Liao and W. F. Su and K. H. Chen and L. C. Chen and C. D. Chen} } @article {1657, title = {Direct-growth of polyaniline nanowires for enzyme-immobilization and glucose detection}, journal = {Electrochem. Comm.}, volume = {11}, year = {2009}, pages = {850-853}, author = {Y.Y. Horng and Y.K. Hsu and Chen, C. C. and L. C. Chen and K.H. Chen*} } @article {1649, title = {Effects of nitrogen-doping on the microstructure, bonding and electrochemical activity of carbon nanotubes}, journal = {Diamond Relat. Mater.}, volume = {18}, year = {2009}, pages = {433-437}, author = {Y.G. Lin and Y.K. Hsu and J.L. Yang and Chen, S. Y. and K.H. Chen* and L. C. Chen} } @article {1666, title = {Efficient hydrogen production using Cu-based catalysts prepared via homogeneous precipitation}, journal = {J. Mater. Chem.}, volume = {19}, year = {2009}, pages = {9186-9194}, author = {Y.K.Lin and Y.H. Su and Y.H. Huang and C.H. Hsu and Y.G. Lin and Y.K. Hsu and L. C. Chen and K. H. Chen} } @article {1655, title = {Electroluminescence from ZnO/Si-nanotips light emitting diodes}, journal = {Nano Letters}, volume = {9}, year = {2009}, pages = {1839}, author = {Y. P. Hsieh and H.Y. Chen and M.Z. Lin and S.C. Shiu and M. Hofmann and M.Y. Chern and X. Jia and Y.J. Yang and H. J. Chang and H.M. Huang and S.C. Tseng and L.C. Chen* and K. H. Chen and C.F. Lin and C.T. Liang* and Y.F. Chen} } @article {1653, title = {Electrophoretic deposition of PtRu nanoparticles on carbon nanotubes for methanol oxidation}, journal = {Diamond Relat. Mater.}, volume = {18}, year = {2009}, pages = {557-562}, author = {Y.K. Hsu and J.L. Yang and Y.G. Lin and Chen, S. Y. and L. C. Chen and K.H. Chen*} } @article {1647, title = {Enhanced charge separation by sieve-layer mediation in high efficiency inorganic-organic solar cell}, journal = {Adv. Mater.}, volume = {21}, year = {2009}, pages = {259-263}, author = {C.H. Lin, , ,, , , , ,, ,, and K.H. and S. Chattopadhyay and C. W. Hsu and M.H. Wu and W.C. Chen and C. T. Wu and S.C. Tsen and J.H. Lee and Chen, C. H. and C. W. Chen and L. C. Chen and K.H. Chen*} } @article {1651, title = {Enhancement of electron field emission of nitrogenated carbon nanotubes on chlorination}, journal = {Diamond Relat. Mater.}, volume = {18}, year = {2009}, pages = {457-460 }, author = {S. C. Ray and U. Palnitkar and C. W. Pao and H. M. Tsai and W.F. Pong* and I-Nan Lin and P. Papakonstantinou and L. C. Chen and K. H. Chen} } @article {1659, title = {A first principles study of the optical properties of CxNy single walled nanotubes}, journal = { Nanotechnology}, volume = {20}, year = {2009}, pages = { 175701}, author = {D. Jana* and A. Chakraborti and L. C. Chen and C. W. Chen and K. H. Chen} } @article {1650, title = {Functionalized GaN nanowires-based electrode for direct label-free voltammetric detection of DNA hybridization}, journal = {J. Mater. Chem.}, volume = {19}, year = {2009}, pages = {928{\textendash}933}, author = {A. Ganguly and C.P. Chen and Y.T. Lai and Kuo, C. C. and C. W. Hsu and K.H. Chen* and L.C. Chen*} } @article {1668, title = {High-gain photoconductivity in semiconducting InN nanowires}, journal = {Appl. Phys. Lett.}, volume = {95}, year = {2009}, pages = {162112}, author = {R. S. Chen and T. H. Yang and H.Y. Chen and L.C. Chen* and K.H. Chen* and Y.J. Yang and C.H. Su and C.R. Lin} } @article {1648, title = {Label-free dual sensing of DNA molecules using GaN nanowires}, journal = { Anal. Chem.}, volume = {81}, year = {2009}, pages = {36-42}, author = {C.P. Chen and A. Ganguly and C. H. Wang and C. W. Hsu and Y.K. Hsu and Chang, Y. C. and K.H. Chen* and L.C. Chen*} } @article {1652, title = {Low methanol-permeable polyaniline/nafion composite membrane for direct methanol fuel cell}, journal = {J. Power. Sources}, volume = {190}, year = {2009}, pages = {279-284}, author = {C. H. Wang and Chen, C. C. and H. C. Hsu and H. Y. Du and C.P. Chen and J. Y. Hwang and L. C. Chen and H. C.Shih and J. Stejskal and K.H. Chen*} } @article {1661, title = {Magnetoresistance fluctuations in a weak disorder indium nitride nanowire}, journal = {J. Phys. D: Appl. Phys.}, volume = {42}, year = {2009}, pages = {185009}, author = {Y.W. Su and K. Aravind and C. S. Wu and W. Kuo and K. H. Chen and L. C. Chen and K. S. Chang-Liao and W. F. Su and C. D. Chen} } @article {1663, title = {Mechanism of recrystallization process in epitaxial GaN under dynamic stress field : Atomistic origin of planar defect formation}, journal = {J. Raman Spect.}, volume = {40}, year = {2009}, pages = {1881-1884 }, author = {C. R. Das and S. Dhara and H. C. Hsu and L. C. Chen and Y. R. Jeng and A. K. Bhaduri and Baldev Raj and K. H. Chen and S. K. Albert} } @article {1654, title = {Mesoporous active carbon dispersed with ultra-fine platinum nanoparticles and their electrochemical properties}, journal = {Diamond Relat. Mater.}, volume = {18}, year = {2009}, pages = {303-306}, author = {J. Y. Hwang and A. Chatterjee and C. H. Shen and J. H. Wang and C. L. Sun and Oliver Chyan and C. W. Chen and K. H. Chen and L.C. Chen*} } @article {1669, title = {Molecule-modulated photoconductivity and gain-amplified selective gas sensing in polar GaN nanowires}, journal = {Appl. Phys. Lett.}, volume = {95}, year = {2009}, pages = {233119}, author = {R. S. Chen and C.Y. Lu and K. H. Chen and L. C. Chen} } @article {1665, title = {Nanostructured ZnO nanorod@Cu nanoparticle as catalyst for microreformers}, journal = {Angew. Chem. Int. Ed.}, volume = {48}, year = {2009}, pages = {7586-7590}, author = {Y.G. Lin and Y.K. Hsu and Y.K. Lin and Chen, S. Y. and L. C. Chen and K.H. Chen*} } @article {1646, title = {Optical and Structural Properties of Mg-ion Implanted GaN Nanowires}, journal = {Vacuum}, volume = {83}, year = {2009}, pages = {797}, author = {P.J. Huang and C. W. Chen and J. Y. Chen and G. C. Chi and C. J. Pan* and Kuo, C. C. and L. C. Chen and C. W. Hsu and K. H. Chen and S. C. Hung and C. Y. Chan and S. J. Pearton and F. Ren} } @article {1656, title = {Origin of the anomalous temperature evolution of photoluminescence peak energy in degenerate InN nanocolumns}, journal = {Opt. Express}, volume = {17}, year = {2009}, pages = {11690-11697}, author = {Wei, P. C. and S. Chattopadhyay and F.S. Lin and C.M. Hsu and S. Jou and J. T. Chen and P.J. Huang and L. C. Chen and K. H. Chen and H. C. Shih} } @article {1658, title = {Pd-catalyzed hydrogen sensing with InN nanobelts}, journal = {J. Vac. Sci. Technol.}, volume = { B 27}, year = {2009}, pages = {L8-10}, author = {J. S. Wright and Wantae Lim and B. P. Gila and S.J. Pearton* and F. Ren and W. T. Lai and L. C. Chen and M.S. Hu and K. H. Chen} } @article {1671, title = {Silver-Nanoparticle-Conjugated Polypeptide Brushes for Surface-Enhanced Raman Scattering}, journal = {J. Phys. Chem.}, volume = {C13}, year = {2009}, pages = {13498-13504}, author = {D.Y. Wang and T.S. Teng and Wu, Y. C. and Y.C. Lee and K. H. Chen and Chen, C. H. and Y.C. Chang* and C. C. Chen*} } @article {1667, title = {Size-dependent photoconductivity and dark conductivity of m-axial GaN nanowires with small critical diameter}, journal = {Appl. Phys. Lett.}, volume = {95}, year = {2009}, pages = {143123}, author = {H.Y. Chen and R. S. Chen and F.C. Chang and L.C. Chen* and K. H. Chen and Y.J. Yang} } @article {1670, title = {Spectral characterization of bulk and nanostructuredaluminum nitride}, journal = {J. Nanophotonics}, volume = {3}, year = {2009}, pages = {031950}, author = {B. Berzina and L. Trinkler and D. Jakimovica and V. Korsaks and J. Grabis and I. Steins and Palcevskis and S. Bellucci and L. C. Chen and S.t Chattopadhyay and K. H. Chen} } @article {1660, title = {Spectroscopic ellipsometry analysis of silicon nanotips obtained by electron cyclotron resonance plasma etching}, journal = {Applied Optics}, volume = {48}, year = {2009}, pages = {4996-5004}, author = {Arturo Mendoza-Galv{\'a}n* and Kenneth J{\"a}rrendahl and Hans Arwin and Yi-Fan Huang and L. C. Chen and K. H. Chen} } @article {1664, title = {Ternary PtRuNi nanocatalysts supported on N-doped carbon nanotubes: deposition process, materials characterization, and electrochemistry}, journal = {J. Electrochem. Soc.}, volume = {156}, year = {2009}, pages = {B1249-B1252}, author = {C. L. Sun and Y.K. Hsu and Y.G. Lin and K. H. Chen and C. Bock and B. MacDougall and X. Wu and L. C. Chen} } @article {1636, title = {Controlled platinum nanoparticles uniformly dispersed on nitrogen-doped carbon nanotubes for methanol oxidation}, journal = {Diamond \& Relat. Mater.}, volume = {17}, year = {2008}, pages = {535-541}, author = {H.-Y. Du and C.-H. Wang and H.-C. Hsu and S.-T. Chang and U.-S. Chen and S.C. Yen and L. C. Chen and H.-C. Shih and K.H. Chen*} } @article {1643, title = {Electroluminescence enhancement of SiGe/Si multiple quantum wells through nanowall structures}, journal = {Nanotechnology}, volume = {19}, year = {2008}, pages = {365705}, author = {T. T. Chen and Y. P. Hsieh and Wei, C. M. and Y. F. Chen* and L. C. Chen and K. H. Chen and Y. H. Peng and C. H. Kuan} } @article {1633, title = {Enhanced emission of InGaN nanowires embedded with self-assembled quantum dots}, journal = {Adv. Func. Mater.}, volume = {18}, year = {2008}, pages = {938}, author = {C. W. Hsu and A. Ganguly and C. H. Liang and Y.Y. Hung and C. T. Wu and G. M. Hsu and Y.F. Chen and Chen, C. C. and K.H. Chen* and L.C. Chen*} } @article {1639, title = {Field emission effects of nitrogenated carbon nanotubes on chlorination and oxidation}, journal = {J. Appl. Phys.}, volume = {104}, year = {2008}, pages = {063710}, author = {S. C. Ray and U. Palnitkar and C. W. Pao and H. M. Tsai and W.F. Pong* and I-Nan Lin and P. Papakonstantinou and Abhijit Ganguly and L. C. Chen and K. H. Chen} } @article {1638, title = {High photocurrent gain in SnO2 nanowires}, journal = {Appl. Phys. Lett.}, volume = {93}, year = {2008}, pages = {112115}, author = {Lin, C. H. and R. S. Chen and T. T. Chen and H.Y. Chen and Y. F. Chen* and K. H. Chen and L. C. Chen} } @article {1632, title = {High-phase-purity zinc-blende InN on r-plane sapphire substrate with controlled nitridation pretreatment}, journal = {Appl. Phys. Lett.}, volume = {92}, year = {2008}, pages = {111914}, author = {C. L. Hsiao and T. W. Liu and C. T. Wu and H. C. Hsu and L.C. Chen* and W.Y. Hsiao and C.C. Yang and A. G{\"a}llstr{\"o}m and P. Holtz and G. M. Hsu and K.H. Chen*} } @article {1644, title = {Hot Photoluminescence in Gamma In2Se3 Nanorods}, journal = {Nanoscale Res. Lett.}, volume = {3}, year = {2008}, pages = {427}, author = {M. D. Yang and C. H. Hu and J. L. Shen* and S. M. Lan and P.J. Huang and G. C. Chi and K. H. Chen and L. C. Chen and Y. T. Lin} } @article {1641, title = {Mechanism of bright red emission in Si nanoclusters}, journal = {Nanotechnology}, volume = {19}, year = {2008}, pages = {395401-(1-5)}, author = {S. Dhara* and C.-Y. Lu and K. G. M. Nair and K. H. Chen and C. -P. Chen and Y. -F. Huang and C. David and L. C. Chen and B. Raj} } @article {1645, title = {Novel copper-zinc oxide arrayed nanoatalysts for hydrogen production applications}, journal = {ECS Transactions}, volume = {13}, year = {2008}, pages = {165-168}, author = {Y.G. Lin and Y.K. Hsu and Chen, S. Y. and K. H. Chen and L. C. Chen} } @article {1631, title = {On-chip fabrication of well aligned and contact barrier-free GaN nanobridge devices with ultrahigh photocurrent responsivity}, journal = {Small}, volume = {4}, year = {2008}, pages = {925-929}, author = {R. S. Chen and S.W. Wang and Lan, Z. H. and J.T.H. Tsai and C. T. Wu and L. C. Chen and K.H. Chen* and Y.S. Huang and Chen, C. C.} } @article {1630, title = {Recrystallization of epitaxial GaN under indentation}, journal = { Appl. Phys. Lett.}, volume = {92}, year = {2008}, pages = { 143114 }, author = {S. Dhara* and C. R. Das and H. C. Hsu and K. H. Chen and L. C. Chen and Baldev Raj and A. K. Bhaduri and S. K. Albert and Ayan Ray} } @article {1640, title = {Selective-hydrogen sensing at room temperature with Pt-coated InN nanobelts}, journal = {Appl. Phys. Lett.}, volume = {93}, year = {2008}, pages = {202109-(1-3)}, author = {W. Lim and J. S. Wright and B. P. Gila and S. J. Pearton and F. Ren and W. T. Lai and L. C. Chen and M.S. Hu and K. H. Chen} } @article {1635, title = {Suppressing series resistance in organic solar cells by oxygen plasma treatment}, journal = {Appl. Phys. Lett.}, volume = {92}, year = {2008}, pages = {233302}, author = {Lin, C. H. and S.C. Tseng and Y.K. Liu and Y. Tai and S. Chattopadhyay and C.F. Lin and J.H. Lee and J.S. Hwang and L.C. Chen* and W.C. Chen and K.H. Chen*} } @article {1642, title = {Surface optical Raman modes in InN nanostructures}, journal = { Appl. Phys. Lett.}, volume = {93}, year = {2008}, pages = { 233116-(1-3)}, author = {S. Sahoo and M.S. Hu and C. W. Hsu and L. C. Chen and K. H. Chen and A. K. Arora and S. Dhara} } @article {1637, title = {Thermal diffusivity study in supported epitaxial InN thin films by the Traveling-Wave technique}, journal = {J. Appl. Phys.}, volume = {104}, year = {2008}, pages = {064920 }, author = {Wei, P. C. and H. C. Shih and C.M. Hsu and F.S. Lin and K. H. Chen and S. Chattopadhyay* and A. Ganguly and C. W. Hsu and L. C. Chen} } @article {1634, title = {Ultrafast charging-discharging capacitive property of RuO2nanoparticles on carbon nanotubes using nitrogen incorporation}, journal = {J. Electrochem. Soc.}, volume = {155}, year = {2008}, pages = {K15-K18}, author = {W.C. Fang* and M.S. Leu and K. H. Chen and L. C. Chen} } @article {1625, title = {Anomalous optical properties of InN nanobelts: evidence of surface band bending and photoelastic effect}, journal = {Adv. Mater.}, volume = {19}, year = {2007}, pages = {4524-4529}, author = {S.P. Fu and C.J. Yu and T. T. Chen and G. M. Hsu and M.J. Chen and L.C. Chen* and K. H. Chen and Y.F. Chen} } @article {1613, title = {Arrayed nanocomposites directly grown on Ti-buffered silicon substrate for miniaturized supercapacitor applications}, journal = {Electrochem. Comm.}, volume = {9}, year = {2007}, pages = {239-244}, author = {W. C. Fang and J. H. Huang and C. L. Sun and K.H. Chen* and O. M. Chyan and C. T. Wu and C.P. Chen and L. C. Chen} } @article {1628, title = {A comparative study of the electronic structures of oxygen- and chlorinetreated nitrogenated carbon nanotubes by X-ray absorption and scanning photoelectron microscopy}, journal = {Appl. Phys. Lett.}, volume = {91}, year = {2007}, pages = { 202102}, author = {S. C. Ray and C. W. Pao and H. M. Tsai and J.W. Chiou and W.F. Pong* and C. W. Chen and M.-H. Tsai and P. Papakonstantinou and L. C. Chen and K. H. Chen} } @article {1615, title = {Control of nucleation site density of GaN nanowires}, journal = {Appl. Surf. Sci.}, volume = {253}, year = {2007}, pages = {3196-3200}, author = {Chang, C. Y. and S.J. Pearton* and P.J. Huang and G.C. Chi,H and T. Wang and J. J. Chen and F. Ren and K. H. Chen and L. C. Chen} } @article {1614, title = {Effect of structural morphology on electrochemical properties of carbon nanotubes directly grown on Ti foil}, journal = {Electrochemical and Solid-State Lett.}, volume = {10}, year = {2007}, pages = {K60-K62 }, author = {W.C. Fang* and M.S. Leu and K. H. Chen and L. C. Chen and J. H. Huang} } @article {1617, title = {Electronic structures and bonding properties of chlorine-treated nitrogenated carbon nanotubes: X-ray absorption and scanning photoelectron microscopy study}, journal = { Appl. Phys. Lett.}, volume = {90}, year = {2007}, pages = {192107}, author = {S. C. Raym and C. W. Pao and H. M. Tsai and J.W. Chiou and W.F. Pong* and C. W. Chen and M.H. Tsai and P. Papakonstantinou and L. C. Chen and K. H. Chen and W. G. Graham} } @article {1620, title = {Epitaxial growth of InN films by molecular-beam epitaxy using hydrazoic acid (HN3) as an efficient nitrogen source}, journal = {J. Phys. Chem. A}, volume = {111}, year = {2007}, pages = {6755-6759}, author = {J. T. Chen and C. L. Hsiao and H. C. Hsu and C. T. Wu and C.L. Yeh and Wei, P. C. and L. C. Chen and K.H. Chen*} } @article {1624, title = {A first principles study of the optical properties of BxCy single wall nanotubes}, journal = { Carbon}, volume = {45}, year = {2007}, pages = {1482-1491}, author = {D. Jana and L. C. Chen and C. W. Chen and S. Chattopadhyay and K. H. Chen} } @article {1612, title = {Formation of Pt-Ru nanoparticles in ethylene glycol solution: an in situ X-ray absorption spectroscopy study}, journal = {Langmuir}, volume = {23}, year = {2007}, pages = {5802-5809}, author = {L.S. Sarma and Chen, C. H. and S.M.S. Kumar and G.R. Wang and S.C. Yen and D.G. liu and H.S. Sheu and K.L. Yu and M.T. Tang and J.F. Lee and C. Bock and K. H. Chen and B.J. Hwang*} } @article {1611, title = {High performance of low electrocatalysts loading on CNT directly grown on carbon for DMFC}, journal = {J. Power Sources}, volume = {171}, year = {2007}, pages = {55-62}, author = {C. H. Wang and H.-Y. Du and Y. T. Tsai and C.P. Chen and C.J. Huang and L. C. Chen and K.H. Chen* and H. C. Shih} } @article {1629, title = {Improved broadband, and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures}, journal = {Nature Nanotechnology}, volume = {2}, year = {2007}, pages = {770-774}, author = {Y.F. Huang and S. Chattopadhyay and Y.J. Jen and C.Y. Peng and T.A. Liu and Y.K. Hsu and C.L. Pan and H.C. Lo and C.H. Hsu and Y.H. Chang and C.S. Lee and K. H. Chen and L. C. Chen} } @article {1616, title = {Influence of catalyst oxidation on the growth of nitrogen-containing carbonnanotubes for energy generation and storage applications}, journal = {Diamond Relat. Mater.}, volume = {16}, year = {2007}, pages = {1140-1143}, author = {W. C. Fang and J. H. Huang* and L. C. Chen and K. H. Chen and Y.H. Oliver Su} } @article {1621, title = {Infrared lasing in InN nanobelts}, journal = {Appl. Phys. Lett.}, volume = {90}, year = {2007}, pages = {123109}, author = {M.S. Hu and G. M. Hsu and K.H. Chen* and C.J. Yu and H. C. Hsu and L. C. Chen and J.H. Hwang and L. S. Hong and Y.F. Chen} } @article {1622, title = {Long-range ferromagnetic ordering at room temperature in Co+ implanted TiO2 nanorods}, journal = {Nanotechnology}, volume = {18}, year = {2007}, pages = {325705}, author = {S. Dhara* and J.J. Wu and G. Mangama and S. Bera and P. Magudapathy and C. T. Wu and K. G. M. Nair and M. Kamaruddin and C. C. Yu and M. H. Yang and S. C. Liu and A. K. Tyagi and S. V. Narashiman and L. C. Chen and K. H. Chen} } @article {1619, title = {Multiphonon Raman scattering in GaN nanowires}, journal = {Appl. Phys. Lett.}, volume = {90}, year = {2007}, pages = {213104}, author = {S. Dhara*, , , ,,,, , ,, K. H and S. Chandra and G. Mangamma and S. Kalavathi and P. Shankar and K. G. M. Nair and A. K. Tyagi and C. W. Hsu and Kuo, C. C. and L. C. Chen and K. H. Chen and K. K. Sriram} } @article {1623, title = {Optical properties of nanocrystalline diamond films from mid-infrared to ultraviolet using reflectometry and ellipsometry}, journal = {J. Mater. Sci.: Mater. Electron}, volume = {48}, year = {2007}, pages = {37-41}, author = {Z. G. Hu and P. Hess* and K. H. Chen} } @article {1626, title = {Photoluminescence spectroscopy of nearly defect-free InN microcrystals exhibiting nondegenerate semiconductor behaviors}, journal = {Appl. Phys. Lett.}, volume = {91}, year = {2007}, pages = {181912}, author = {C. L. Hsiao and H. C. Hsu and L.C. Chen* and C. T. Wu and C. W. Chen and M. Chen and L.W. Tu and K. H. Chen} } @article {1618, title = {Structural and optical properties of single crystal Zn1-xMgxO nanorods-experimental and theoretical studies}, journal = {J. Appl. Phys.}, volume = {101}, year = {2007}, pages = {033502}, author = {Y.S. Chang and C.T. Chien and C. W. Chen* and T.Y. Chu and H.H. Chiang and C. H. Ku and J.J. Wu and C.S. Lin and L. C. Chen and K. H. Chen} } @article {1627, title = {Ultrahigh photocurrent gain in m-axial GaN nanowires}, journal = {Appl. Phys. Lett.}, volume = {91}, year = {2007}, pages = { 223106}, author = {R. S. Chen and H.Y. Chen and C.Y. Lu and C.P. Chen and L. C. Chen and Y.J. Yang and K.H. Chen*} } @article {1584, title = {Anomalous energy shift of emission spectra of ZnO nanorods with sizes beyond quantum confinement regime}, journal = {Appl. Phys. Lett.}, volume = {88}, year = {2006}, pages = {241905-(1-3)}, author = {C. W. Chen and K.H. Chen* and C. H. Shen and J.J. Wu and W.F. Pong and A. Ganguly and L. C. Chen} } @article {1604, title = {Atomic-scale deformation in N-doped carbon nanotubes}, journal = {J. Am. Chem. Soc.}, volume = {128}, year = {2006}, pages = {8368-8369 }, author = {C. L. Sun and H. W. Wang and M. Hayashi and L. C. Chen and K.H. Chen*} } @article {1587, title = {Carbon nanotubes directly grown on Ti electrodes and enhancement in their electrochemical properties by nitric acid treatment}, journal = {Electrochemical and Solid-State Lett.}, volume = {9}, year = {2006}, pages = {A5}, author = {W. C. Fang and J. H. Huang* and L. C. Chen and Y. O. Su and K. H.Chen and C. L. Sun} } @article {1606, title = {Controlled growth of aluminium nitride nanorod arrays via chemical vapour deposition}, journal = {Nanotechnology}, volume = {17}, year = {2006}, pages = {S321-326 }, author = {J. Yang and T. W. Liu and C. W. Hsu and L. C. Chen and K. H. Chen and C. C. Chen*} } @article {1594, title = {Effect of ozone cleaning and annealing on Ti/Al/Pt/Au ohmic contacts on GaN nanowires}, journal = {Electrochemical and Solid-State Lett.}, volume = {9}, year = {2006}, pages = {G155-G157}, author = {Chang, C. Y. and T. W. Lan and G. C. Chi and L.C. Chen* and K. H. Chen and J. J. Chen and S. Jang and F. Ren and S. J. Pearton} } @article {1599, title = {Effect of temperature annealing on capacitive and structural properties of hydrous ruthenium oxides}, journal = {J. Power Sources }, volume = {160}, year = {2006}, pages = {1506-1510}, author = {W. C. Fang and J. H. Huang* and L. C. Chen and Y. L. Oliver Su and K. H. Chen} } @article {1596, title = {Electrical transport properties of single GaN and InN nanowires}, journal = {J. Electronic Materials}, volume = {35}, year = {2006}, pages = {738-743}, author = {Chang, C. Y. and G. C. Chi and W. M. Wang and L.C. Chen* and K. H. Chen and F. Ren and S. J. Pearton} } @article {1595, title = {Electroluminescence from ZnO nanowire/polymer composite p-n junction}, journal = {Appl. Phys. Lett.}, volume = {88}, year = {2006}, pages = { 173503-(1-3)}, author = {Chang, C. Y. and F. C. Tsao and C. J. Pan and G. C. Chi and H. T. Wang and J. J. Chen and F. Ren and D. P. Norton and S.J. Pearton* and K. H. Chen and L. C. Chen} } @article {1609, title = {Electronic structure of group-III-nitride nanorods studied by x-ray absorption, x-ray emission, and Raman spectroscopy}, journal = {Appl. Phys. Lett.}, volume = {88}, year = {2006}, pages = {223113-(1-3)}, author = {C. W. Pao and P.D. Babu and H. M. Tsai and J.W. Chiou and S. C. Ray and S.C. Yang and F.Z. Chien and W.F. Pong* and M.-H. Tsai and C. W. Hsu and L. C. Chen and K. H. Chen and H.-J. Lin and J.F. Lee and J. H. Guo} } @article {1588, title = {Enhanced electrochemical properties of arrayed CNxnanotubes directly grown on Ti-buffered silicon substrates}, journal = {Electrochemical and Solid State Lett.}, volume = {9}, year = {2006}, pages = {A175-A178}, author = {W. C. Fang and J. H. Huang and C. L. Sun and L.C. Chen* and P. Papakonstantinou and O. M. Chyan and K. H. Chen} } @article {1598, title = {Ferromagnetism in cobalt doped n-GaN}, journal = {Appl. Phys. Lett.}, volume = {88}, year = {2006}, pages = {173110-(1-3) }, author = {S. Dhara* and B. Sundaravel and K. G. M. Nair and R. Kesavamoorthy and M. C. Valsakumar and T. V. Chandrasekhar Rao and L. C. Chen and K. H. Chen} } @article {1603, title = {Geometrically tuned and chemically switched wetting properties of silicon nanotips}, journal = {Nanotechnology}, volume = {17}, year = {2006}, pages = {2542-2545}, author = {H.C. Lo and Y.F. Huang and S. Chattopadhyay and C.H. Hsu and C.F. Chen and K. H. Chen and L.C. Chen*} } @article {1600, title = {High methanol oxidation activity of electrocatalysts supported by directly grown nitrogen containing carbon nanotubes on carbon cloth}, journal = {Electrochimica Acta}, volume = {52}, year = {2006}, pages = {1612-1617}, author = {C. H. Wang and H. C. Shih and Y. T. Tsai and H. Y. Du and L. C. Chen and K.H. Chen*} } @article {1610, title = {Influence of oxygen on the elastic properties of nanocrystalline diamond films studied by laser-induced surface acoustic waves}, journal = {Ultrasonics}, volume = {44}, year = {2006}, pages = {e1229-e1232}, author = {Z. H. Shen, ,,, and P. Hess* and J. P. Huang and Lin, Y. C. and K. H. Chen} } @article {1589, title = {Luminescence properties of wurtzite AlN nanotips}, journal = {Appl. Phys. Lett.}, volume = {89}, year = {2006}, pages = {163127-(1-3)}, author = {S. C. Shi and C.F. Chen and S. Chattopadhyay and S. K. Dhara and K. H. Chen and B. K. Ke and L.C. Chen* and L. Trinkler and B. Berzina} } @article {1602, title = {Mechanical properties of nanocrystalline diamond films}, journal = {J. Appl. Phys.}, volume = {99}, year = {2006}, pages = {124302-(1-6) }, author = {Z. H. Shen and P. Hess* and J. P. Huang and Lin, Y. C. and K. H. Chen and L. C. Chen and S.T. Lin} } @article {1592, title = {Morphology control of Si nanotips fabricated by electron cyclotron resonance plasma etching}, journal = {J. Vac. Sci. Technol. }, volume = {B24}, year = {2006}, pages = {308-311}, author = {C.H. Hsu and Y.F. Huang and L. C. Chen and S. Chattopadhyay* and K. H. Chen and H.C. Lo and C.F. Chen} } @article {1607, title = {Multi-wall carbon nanotubes coated with polyaniline}, journal = {Polymer}, volume = {47}, year = {2006}, pages = {5715-5723}, author = {E. N. Konyushenko, , , , , ,, , , and J. Stejskal* and M. Trchova and J. Hradi and J. Kovarova and J. Prokes and M. Cieslar and J. Y. Hwang and K. H. Chen and I. Sapurina} } @article {1601, title = {Nitrogen ion beam synthesis of InN in InP(100) at elevated temperature}, journal = { Appl. Phys. Lett.}, volume = {88}, year = {2006}, pages = {241904-(1-3)}, author = {S. K. Dhara and P. Magudapathy and R. Kesavamoorthy and S. Kalavathi and K. G. M. Nair and G. M. Hsu and L. C. Chen and K.H. Chen* and K. Santhakumar and T. Soga} } @article {1608, title = {Photo-assisted local oxidation of GaN using an atomic force microscope}, journal = {Nanotechnology}, volume = {17}, year = {2006}, pages = {3299-3303}, author = {J. S. Hwang* and Z. S. Hu and T. Y. Lu and L. W. Chen and S. W. Chen and T.Y. Lin and C. L. Hsiao and K. H. Chen and L. C. Chen} } @article {1597, title = {Photoconductivity and highly selective UV sensing features of amorphous silicon carbon nitride thin films}, journal = {Appl. Phys. Lett.}, volume = {88}, year = {2006}, pages = {073515-(1-3)}, author = {C. W. Chen* and C. C. Huang and Y. Y. Lin and W. F. Su and L.C. Chen* and K. H. Chen} } @article {1585, title = {Photosensitive gold nanoparticle-embedded dielectric nanowires}, journal = {Nature Materials}, volume = {5}, year = {2006}, pages = {102-106}, author = {M.S. Hu and H.L. Chen and C. H. Shen and L. S. Hong and B.R. Huang and K. H. Chen and L.C. Chen*} } @article {1586, title = {Self selected apex angle distribution of the nanotips}, journal = { Appl. Phys. Lett.}, volume = {89}, year = {2006}, pages = {143105-(1-3) }, author = {S. Chattopadhyay and S. C. Shi and C. T. Wu and L. C. Chen and Chen, C. H. and K.H. Chen*} } @article {1605, title = {Self-regulating and diameter-selective growth of GaN nanowires}, journal = {Nanotechnology}, volume = {17}, year = {2006}, pages = {S332-337}, author = {C.K. Kuo and C. W. Hsu and C. T. Wu and Lan, Z. H. and Mou, C. Y. and Chen, C. C. and Y.J. Yang and L. C. Chen and K.H. Chen*} } @article {1593, title = {Sharp infrared emission from single-crystalline indium nitride nanobelts derived by guided-stream thermal chemical vapor deposition}, journal = {Adv. Func. Mater.}, volume = {16}, year = {2006}, pages = {537-541}, author = {M. H. Hu and W. M. Wang and T. T. Chen and L. S. Hong and C. W. Chen and C. C.Chen and Y.F. Chen and K. H. Chen and L.C. Chen*} } @article {1591, title = {Structural evolution of AlN nano-structure: nanotips and nanorods}, journal = {Chem. Phys. Lett.}, volume = {418}, year = {2006}, pages = {152-157 }, author = {S. C. Shi and S. Chattopadhyay* and C.F. Chen and K. H. Chen and L. C. Chen} } @article {1590, title = {Superior electrochemical performance of CNxNTs using TiSi2buffer layer on Si substrates}, journal = {J. Vac. Sci. Tech.}, volume = {B24}, year = {2006}, pages = {87-90 }, author = {W. C. Fang and J. H. Huang and C. L. Sun and L.C. Chen* and P. Papakonstantinou and O. M. Chyan and K. H. Chen} } @article {1572, title = {A 5 nm ruthenium thin film as a directly plate-able copper diffusion barrier}, journal = {Appl. Phys. Lett.}, volume = {86}, year = {2005}, pages = {083104-(1-3)}, author = {T. N. Arunagiri, , , ,,,, and and Y. Zhang and O. Chyan* and M. El-Bounani and M. J. Kim and C. T. Wu and L. C. Chen and K. H. Chen} } @article {1571, title = {Affinity of Si-N and Si-C bond in the SiCN thin films - experimental and theoretical approaches}, journal = {Diamond Relat. Mater.}, volume = {14}, year = {2005}, pages = {1126-1130}, author = {C. W. Chen and C. C. Huang and Y. Y. Lin and L. C. Chen and K. H. Chen} } @article {1581, title = {Comparison of the electronic structures of AlN nanotips grown on p- and n-type Si substrates}, journal = {J. Phys.: Condens. Matter}, volume = {17}, year = {2005}, pages = {7523-7530}, author = {J. W.Chiou and H. M. Tsai and C. W. Pao and C. L. Dong* and C. L. Chang and F.Z. Chien and W.F. Pong and M.-H. Tsai and S. C. Shi and C.F. Chen and L. C. Chen and K. H. Chen and I.-H. Hong and C.-H. Chen and H.-J. Lin and J. H. Guo} } @article {1567, title = {Direct evidence of nanocluster-induced luminescence in InGaN epifilms}, journal = {Appl. Phys. Lett.}, volume = {86}, year = {2005}, pages = {021911-(1-3)}, author = {H. J. Chang and Chen, C. H. and Y. F. Chen* and T.Y. Lin and L. C. Chen and K. H. Chen and Lan, Z. H.} } @article {1562, title = {Direct synthesis of highly stable mesoporous molecular sieve (MMS-H) containing zeolite building units}, journal = {Adv. Func. Mater.}, volume = {15}, year = {2005}, pages = {253-258}, author = {Sakthivel, A. and Huang, S. J. and Chen, W. H. and Lan, Z. H. and K. H. Chen and Lin, H. P. and Mou, C. Y. and S. B. Liu*} } @article {1583, title = {Effect of gold coating on local oxidation using an atomic force microscope}, journal = {Appl. Phys. Lett.}, volume = {86}, year = {2005}, pages = {161901-(1-3)}, author = {J. S. Hwang* and Z. Y. You and S. Y. Lin and Z. S. Hu and C. T. Wu and C. W. Chen and K. H. Chen} } @article {1568, title = {Effects of high-density oxygen plasma post-treatment on field emission properties of carbon nanotube field-emission displays}, journal = {Jpn. J. Appl. Phys.}, volume = {44}, year = {2005}, pages = {8231-8236}, author = {C. P. Juan and Tsai, C. C. and K. H. Chen and L. C. Chen and H. C. Cheng} } @article {1569, title = {Fabrication and characterization of lateral field emission device based on carbon nanotubes}, journal = {Jpn. J. Appl. Phys.}, volume = {44}, year = {2005}, pages = {2612-2617}, author = {C. P. Juan and Tsai, C. C. and K. H. Chen and L. C. Chen and H. C. Cheng} } @article {1577, title = {Field Emission from Quasi-aligned Aluminum Nitride Nanotips}, journal = {Appl. Phys. Lett.}, volume = {87}, year = {2005}, pages = {73109-(1-3)}, author = {S. C. Shi and C.F. Chen and S. Chattopadhyay and K. H. Chen and L.C. Chen*} } @article {1579, title = {Formation and in-situ dynamics of metallic nanoblisters in self-ion-implanted GaN nanowires}, journal = {Nanotechnology}, volume = {16}, year = {2005}, pages = {2764-2769}, author = {A. Datta and S. Dhara* and S. Muto and C. W. Hsu and C. T. Wu and C. H. Shen and T. Tanabe and T. Maruyama and K. H. Chen and L. C. Chen and Wang, Y. L.} } @article {1578, title = {Generally applicable self-masking technique for nanotip array fabrication}, journal = { Int. J. Nanoscience}, volume = {4}, year = {2005}, pages = {879-886}, author = {K.H. Chen* and C.H. Hsu and H.C. Lo and S. Chattopadhyay and C. T. Wu and J.S. Hwang and Y.J. Yang and L. C. Chen} } @article {1560, title = {Growth of nanocrystalline diamond films in CCl4/H2ambient}, journal = {Thin Solid Films}, volume = {473}, year = {2005}, pages = {24-30}, author = {J. J. Wu* and C. H. Ku and T. C. Wong and C. T. Wu and K. H. Chen and L. C. Chen} } @article {1570, title = {Growth of single-crystal wurtzite aluminum nitride nanotips with self-selective apex angle}, journal = {Adv. Func. Mater.}, volume = {15}, year = {2005}, pages = {781-786}, author = {S. C. Shi and C.F. Chen and S. Chattopadhyay and Lan, Z. H. and K. H. Chen and L.C. Chen*} } @article {1565, title = {Improved field-emission properties of carbon nanotube field-emission arrays by controlled density growth of carbon nanotubes}, journal = {Jap. J. of Appl. Phys.}, volume = {44}, year = {2005}, pages = {365-370}, author = {C. P. Juan and K.H. Chen* and et al} } @article {1573, title = {Mechanism of nanoblister formation in Ga+ self-ion implanted GaN nanowires}, journal = {Appl. Phys. Lett.}, volume = {86}, year = {2005}, pages = {203119-(1-3)}, author = {S. Dhara, ,,,, ,, ,,, and A. Datta and C. T. Wu and K.H. Chen* and Wang, Y. L. and S. Muto and T. Tanabe and C. H. Shen and C. W. Hsu and L. C. Chen and T. Maruyama} } @article {1566, title = {Molecular sensing with ultrafine silver crystals on hexagonal aluminum nitridenanorodtemplate}, journal = {J. Am. Chem. Soc.}, volume = {127}, year = {2005}, pages = {2820-2821}, author = {S. Chattopadhyay* and S. C. Shi and Lan, Z. H. and C.F. Chen and K. H. Chen and L. C. Chen} } @article {1580, title = {Optical characterization of GaN by N+ implantation into GaAs at elevated temperature}, journal = {Appl. Phys. Lett.}, volume = {87}, year = {2005}, pages = {261915-(1-3)}, author = {S. K. Dhara*, , , , and r, , , and , and P. Magudapathy and R. Kesavamoorthy and S. Kalavathi and K. G. M. Nair and G. M. Hsu and L. C. Chen and K. H. Chen and K. Santhakumar and T. Soga} } @article {1575, title = {Optical properties and photoconductivity of amorphous silicon carbon nitride thin film and its application for UV detection}, journal = {Diamond Relat. Mater.}, volume = {14}, year = {2005}, pages = {1010-1013}, author = {C. W. Chen* and C. C. Huang and Y. Y. Lin and L. C. Chen and K. H. Chen and W. F. Su} } @article {1582, title = {Reduced temperature-quenching of photoluminescence from indium nitride nanotips grown by metalorganic chemical vapor deposition}, journal = {Appl. Phys. Lett.}, volume = {87}, year = {2005}, pages = {203103-(1-3)}, author = {S. C. Shi and C.F. Chen and G. M. Hsu and J.S. Hwang and S. Chattopadhyay and Lan, Z. H. and K. H. Chen and L.C. Chen*} } @article {1576, title = {Responseto {\textquotedblleft}Comment on {\textquoteleft}Direct evidence of nanocluster-induced luminescence in InGaNepifilms}, journal = { Appl. Phys. Lett.}, volume = {87}, year = {2005}, pages = {136102-(1-2)}, author = {H. J. Chang and Chen, C. H. and Y. F. Chen* and T.Y. Lin and L. C. Chen and K. H. Chen and Lan, Z. H.} } @article {1563, title = {Surface enhanced Raman spectroscopy using self assembled silver nanoparticulates on silicon nanotips}, journal = {Chem. Mater.}, volume = {17}, year = {2005}, pages = {553-559 }, author = {S. Chattopadhyay* and H.C. Lo and C.H. Hsu and L. C. Chen and K. H. Chen} } @article {1564, title = {Transport properties of InN nanowires}, journal = {Appl. Phys. Lett.}, volume = {87}, year = {2005}, pages = {093112-(1-3)}, author = {C. Y. Chang,, ,,,, and G. C. Chi and W. M. Wang and L. C. Chen and K. H. Chen and F. Ren and S.J. Pearton*} } @article {1574, title = {Ultrafine platinum nanoparticles uniformly dispersed on arrayed CNx nanotubes with high electrochemical activity}, journal = {Chem.of Mater.}, volume = {17}, year = {2005}, pages = {3749-3753}, author = {C. L. Sun and L.C. Chen* and M. C. Su and L. S. Hong and O. Chyan and C. Y. Hsu and K. H. Chen and T. F. Chang and L. Chang} } @article {1547, title = {Amorphous boron carbon nitride as a pH sensor}, journal = {Appl. Phys. Lett.}, volume = {84}, year = {2004}, pages = {2676-2678}, author = {Li, C. L. and B.R. Huang and S. Chattopadhyay* and K. H. Chen and L. C. Chen} } @article {1544, title = {Blue luminescence of Au nanoclusters embedded in silica matrix}, journal = {J. Chem. Phys.}, volume = {121}, year = {2004}, pages = {12595-12599 }, author = {S. Dhara* and Sharat Chandra and P. Magudapathy and S. Kalavathi and B. K. Panigrahi and K. G. M. Nair and V. S. Sastry and C. W. Hsu and C. T. Wu and K. H. Chen and L. C. Chen} } @article {1543, title = {Blue shift of yellow band in self-ion beam irradiated GaN nanowires}, journal = {Appl. Phys. Lett.}, volume = {84}, year = {2004}, pages = {3486-3488}, author = {S. K. Dhara and A. Datta and Lan, Z. H. and K.H. Chen* and Wang, Y. L. and C. S. Shen and L. C. Chen and C. W. Hsu and H. M. Lin and Chen, C. C.} } @article {1545, title = {Characterization of nanodome on GaN nanowires formed with Ga ion irradiation}, journal = {Mater. Trans.}, volume = {45}, year = {2004}, pages = {435-439 }, author = {S. Muto* and S. K. Dhara and A. Datta and C. W. Hsu and C. T. Wu and C. H. Shen and L. C. Chen and K. H. Chen and Wang, Y. L. and T. Tanabe and T. Maruyama and H. M. Lin and Chen, C. C.} } @article {1550, title = {Electrical properties of annealed MPCVD grown vertically aligned carbon nanotubes films}, journal = {Diamond \& Related Materials}, volume = {13}, year = {2004}, pages = {2156-2159}, author = {B.R. Huang and C. S. Huang and C. C. Wu and L. C. Chen and K. H. Chen} } @article {1555, title = {Electronic and bonding structures of B-C-N thin films by X-ray absorption and photoemission spectroscopy}, journal = {J. Appl. Phys. }, volume = {96}, year = {2004}, pages = {208-211}, author = {S. C. Ray and H. M. Tsai and C. W. Bao and J.W. Chiou and J. C. Jan and K. Kumar and W.F. Pong* and M.-H. Tsai and S. Chattopadhyay and L. C. Chen and S. C. Chien and M.T. Lee and S.T. Lin and K. H. Chen} } @article {1541, title = {Generally applicable self-masked dry etching technique for nanotip arrays formation}, journal = {Nano Letters}, volume = {4}, year = {2004}, pages = {471-475}, author = {C.H. Hsu and H.C. Lo and C.F. Chen and C. T. Wu and J.H. Hwang and D. Das and J. Tsai and L. C. Chen and K.H. Chen*} } @article {1552, title = {Growth and characterization of GaN nanowires produced on different sol-gel derived catalyst dispersed in TiO2 and polyvinyl alcohol matrix}, journal = { J. Mater. Res.}, volume = {19}, year = {2004}, pages = {1768-1774}, author = {A. Chatterjee and S. Chattopadhyay and C. W. Hsu and C. H. Shen and L.C. Chen* and Chen, C. C. and K. H. Chen} } @article {1559, title = {Growth and characterization of vertically aligned IrO2 nanotubes}, journal = {J. Crystal Growth}, volume = {271}, year = {2004}, pages = {105-112}, author = {R. S. Chen and H. M. Chang and Y. S. Huang* and D. S. Tsai and S. Chattopadhyay and K. H. Chen} } @article {1556, title = {Growth mechanism, structure and IR photoluminescence studies of indium nitride nanorods}, journal = {J. Cryst. Growth}, volume = {269}, year = {2004}, pages = {87-94}, author = {Lan, Z. H. and W. M. Wang and C. L. Sun and S. C. Shi and C. W. Hsu and K. H. Chen and Chen, C. C. and L.C. Chen*} } @article {1558, title = {Growth of well aligned IrO2 nanotubes on LiTaO3 (012) substrates}, journal = {Chem. Mater.}, volume = {16}, year = {2004}, pages = {2457-2462}, author = {R. S. Chen and Y. S. Huang* and D. S. Tsai and S. Chattopadhyay and C. T. Wu and Lan, Z. H. and K. H. Chen} } @article {1548, title = {Hexagonal-to-cubic phase transformation in GaN nanowires by Ga+ implantation}, journal = {Appl. Phys. Lett.}, volume = {84}, year = {2004}, pages = {5473-5475}, author = {S. Dhara and A. Datta and C. T. Wu and Lan, Z. H. and K.H. Chen* and Wang, Y. L. and C. W. Hsu and C. H. Shen and L. C. Chen and Chen, C. C.} } @article {1554, title = {Mechanism of enhanced luminescence in InxAlyGa1{\textendash}x{\textendash}yN quaternary epilayers}, journal = { Appl. Phys. Lett.}, volume = {84}, year = {2004}, pages = {1480-1482}, author = {Chen, C. H. and Y.F. Chen and Lan, Z. H. and L. C. Chen and K. H. Chen and H. X. Jiang and J. Y. Lin} } @article {1546, title = {Nanohomojunction (GaN) and nanoheterojunction (InN) nanorods on 1-dimensional GaN nanowire substrates}, journal = {Adv. Func. Mater.}, volume = {14}, year = {2004}, pages = {233-237}, author = {Lan, Z. H. and S. K. Dhara and K.H. Chen* and C. T. Wu and L. C. Chen and C. W. Hsu and Chen, C. C.} } @article {1553, title = {Replication of mesoporous aluminosilicate molecular sieves (RMMs) with zeolite framework from mesoporous carbons}, journal = {Chem. of Mater.}, volume = {16}, year = {2004}, pages = {3168-3175}, author = {Sakthivel, A. and Huang, S. J. and Chen, W. H. and Lan, Z. H. and K. H. Chen and Lin, H. P. and Mou, C. Y. and S. B. Liu*} } @article {1561, title = {Spillout effect in gold nanoclusters embedded in c-Al2O3(0001) matrix}, journal = {Chem. Phys. Lett.}, volume = {399}, year = {2004}, pages = {354-358}, author = {S. Dhara* and B. Sundaravel and K.H. Chen, and et al} } @article {1551, title = {Strong room-temperature UV emission of nanocrystalline ZnO films derived from a polymeric solution}, journal = {Chem. Phys. Lett.}, volume = {391}, year = {2004}, pages = {278-282}, author = {A. Chatterjee and C. H. Shen and A. Ganguly and L.C. Chen* and C. W. Hsu and J. Y. Hwang and K. H. Chen} } @article {1557, title = {Structural and electronic properties of wide band gap silicon carbon nitride materials {\textendash} afirst principles study}, journal = {Diamond \& Relat. Mater.}, volume = {13}, year = {2004}, pages = {1158-1165}, author = {C. W. Chen* and M. H. Lee and L. C. Chen and K. H. Chen} } @article {1549, title = {X-Ray absorption studies of boron{\textendash}carbon{\textendash}nitrogen (BxCyNz ) ternary}, journal = {Diamond \& Related Mater.}, volume = {13}, year = {2004}, pages = {1553-1557}, author = {S.C. Ray,, ,,, ,, , ,, and H. M. Tsai and J.W. Chiou and J. C. Jan and K. Kumar and W.F. Pong* and F.Z. Chien and M.-H. Tsai and S. Chattopadhyay and L. C. Chen and S. C. Chien and M.T. Lee and S.T. Lin and K. H. Chen} } @article {1540, title = {Band gap dependence of field emission from one dimensional nanostructures grown on n-type and p-type silicon substrates}, journal = {Phys. Rev.}, volume = { B68}, year = {2003}, pages = {125322-(1-5)}, author = {Chang, C. S. and S. Chattopadhyay and L.C. Chen* and K. H. Chen and C. W. Chen and Y.F. Chen and R. Collazo and Z. Sitar} } @article {1533, title = {Controlled growth of silicon carbide nanorods by rapid thermal process and their field emission properties}, journal = {Chem. Phys. Lett.}, volume = {379}, year = {2003}, pages = {155-161}, author = {T. H. Yang and Chen, C. H. and A. Chatterjee and H. Y. Li and J. T. Lo and C. T. Wu and K. H. Chen and L.C. Chen*} } @article {1535, title = {Doping and electrical properties of amorphous silicon carbon nitride films}, journal = {Diamond \& Related Materials}, volume = {12}, year = {2003}, pages = {1213-1219}, author = {Chou, Y. C. and S. Chattopadhyay and L.C. Chen* and Y.F. Chen and K. H. Chen} } @article {1529, title = {Elastic, mechanical, and thermal properties of nanocrystalline diamond films}, journal = {J. Appl. Phys.}, volume = {93}, year = {2003}, pages = {2164-2171}, author = {J. Philip and P. Hess* and T. Feygelson and J.E. Butler and S. Chattopadhyay and K. H. Chen and L. C. Chen} } @article {1537, title = {Electronic structure of GaN nanowire studied by X-ray-absorption spectroscopy and scanning photoelectron microscopy}, journal = {Appl. Phys. Lett.}, volume = {82}, year = {2003}, pages = {3949-3951}, author = {J.W. Chiou and J. C. Jan and H. M. Tsai and W.F. Pong* and M.H. Tsai and Hong, I. H. and R. Klauser and J.F. Lee and C. W. Hsu and H. M. Lin and Chen, C. C. and C. H. Shen and L. C. Chen and K. H. Chen} } @article {1536, title = {Enhanced dynamic annealing in self-ion implanted GaN nanowires}, journal = {Appl. Phys. Lett.}, volume = {82}, year = {2003}, pages = {451-453}, author = {S. K. Dhara and A. Datta and C. T. Wu and Lan, Z. H. and K.H. Chen* and Wang, Y. L. and L. C. Chen and C. W. Hsu and H. M. Lin and Chen, C. C.} } @article {1538, title = {Enhanced field emission from nitrogen-doped amorphous diamond}, journal = {J. Mater. Res.}, volume = {18}, year = {2003}, pages = {1594-1599}, author = {M. C. Kan and J. L. Huang* and J.C. Sung and K. H. Chen and D. F. Lii} } @article {1527, title = {Field emission characteristics of amorphous diamond}, journal = {J. Am. Cherem. Soc.}, volume = {86}, year = {2003}, pages = {1513-1517}, author = {M. C. Kan and J. L. Huang* and J. Sung and D. F. Lii and K. H. Chen} } @article {1539, title = {Interface energy of Au7Si grown in the interfacial layer of truncated hexagonal dipyramidal Au nanoislands on polycrystalline-silicon}, journal = {Appl. Phys. Lett.}, volume = {82}, year = {2003}, pages = {4468-4470}, author = {J.S. Wu and Y.F. Chen and S. Dhara and C. T. Wu and K. H. Chen and L.C. Chen*} } @article {1531, title = {Mechanical properties of amorphous boron carbon nitride films produced by dual gun sputtering}, journal = {Diamond Relat. Mater. }, volume = {12}, year = {2003}, pages = {1463-1471}, author = {S. C. Chien and S. Chattopadhyay* and L. C. Chen and S.T. Lin and K. H. Chen} } @article {1532, title = {Nano-tip emission of tetrahedral amorphous carbon}, journal = {Diamond \& Related Materials}, volume = {12}, year = {2003}, pages = {1691-1697}, author = {M. C. Kan and J. L. Huang* and J.C. Sung and K. H. Chen and D. F. Lii} } @article {1530, title = {Quasiquenching size effects in gold nanoclusters embedded in silica matrix}, journal = {Chem. Phys. Lett.}, volume = {370}, year = {2003}, pages = {254-260 }, author = {S. Dhara* and R. Kesavamoorthy and P. Magudapathy and M. Premila and B. K. Panigrahi and K. G. M. Nair and C. T. Wu and K. H. Chen and L. C. Chen} } @article {1528, title = {SiC-capped nanotip arrays for field emission with ultralow turn-on field}, journal = {Appl. Phys. Lett.}, volume = {83}, year = {2003}, pages = {1420-1422}, author = {H.C. Lo and D. Das and J.S. Hwang and K. H. Chen and C.H. Hsu and C.F. Chen and L. C. Chen} } @article {1534, title = {Thermionic emission of amorphous diamond and field emission of carbon nanotube}, journal = {Carbon}, volume = {41}, year = {2003}, pages = {2839-2845}, author = {M.C. Kan,, ,, and J. L. Huang* and J.C. Sung and K. H. Chen and B.S. Yau} } @article {1517, title = {The analysis on the surface properties of the annealed-diamond membrane}, journal = {Mater. Sci. and Engineer.}, volume = { B 95}, year = {2002}, pages = {111-115}, author = {B.R. Huang* and L. C. Chen and K. H. Chen} } @article {1522, title = {Bonding characterization, density measurement and thermal diffusivity studies of amorphous silicon carbon nitride and boron carbon nitride thin films}, journal = {J. Appl. Phys.}, volume = {92}, year = {2002}, pages = {5150-5158}, author = {S. Chattopadhyay and L.C. Chen* and S. C. Chien and S.T. Lin and K. H. Chen} } @article {1511, title = {Controlling steps during early stages of the aligned growth of carbon nanotubes using microwave plasma enhanced chemical vapor deposition}, journal = {Adv. Fun. Mate}, volume = {12}, year = {2002}, pages = {687-692}, author = {L.C. Chen* and C.Y. Wen and C. H. Liang and W.K. Hong and K. J. Chen and H. C. Cheng and C. S. Shen and C. T. Wu and K. H. Chen} } @article {1514, title = {Electrical, thermal and structural properties of microcrystalline Si thin films}, journal = {Jpn.Appl. Phys. Lett.}, volume = {41}, year = {2002}, pages = {L229-232}, author = {D. Das* and M. Jana and A. K. Barua and S. Chattopadhyay and L. C. Chen and K. H. Chen} } @article {1523, title = {Electronic structure at the carbon nanotube tips studied by X-ray-absorption spectroscopy and scanning photoelectron microscopy}, journal = {Appl. Phys. Lett.}, volume = {81}, year = {2002}, pages = {4189-4191}, author = {J.W. Chiou and C. L. Yueh and J. C. Jan and H. M. Tsai and W.F. Pong* and Hong, I. H. and R. Klauser and M.H. Tsai and Y.K. Chang and Y.Y. Chen and C. T. Wu and K. H. Chen and S.L. Wei and C.Y. Wen and L. C. Chen and T. J. Chuang} } @article {1515, title = {Field emission of nanostructured amorphous SiCN films deposited by reactive magnetron sputtering of SiC in CH4/N2atmosphere}, journal = {Thin Solid Films}, volume = {416}, year = {2002}, pages = {85-91}, author = {H.Y. Lin and Y. C. Chen and Lin, CY and Y. P. Tong and L.G. Hwa and K. H. Chen and L.C. Chen*} } @article {1524, title = {Growth and optical properties of self-organized Au2Si nanosphere peapoded in silicon oxide nanowires}, journal = {Adv. Mater.}, volume = {14}, year = {2002}, pages = {1847-1850}, author = {J.S. Wu and S. K. Dhara and C. T. Wu and K. H. Chen and Y.F. Chen and L.C. Chen*} } @article {1525, title = {Growth of high-quality epitaxial InN film with high-speed reactant gas by OMVPE}, journal = {Jpn. J. Appl. Phys.}, volume = {41}, year = {2002}, pages = { L1321-1324}, author = {F.H. Yang and J.S. Hwang and Y.J. Yang* and K. H. Chen and J. H. Wang} } @article {1521, title = {Heterostructures of ZnO-Zn coaxial nanocables and ZnO nanotubes}, journal = {Appl. Phys. Lett.}, volume = {81}, year = {2002}, pages = {1312-1314}, author = {J.J. Wu and S. C. Liu and C. T. Wu and K.H. Chen* and L. C. Chen} } @article {1518, title = {High growth rate deposition of oriented InN films}, journal = {Thin Solid Films}, volume = {405}, year = {2002}, pages = {194-197}, author = {F.H. Yang and Y.J. Yang* and J.H. Hwang and K. H. Chen and T.H. Li and L.G. Hwa and L. C. Chen} } @article {1526, title = {Improvement of field emission characteristics of carbon nanotubes by eximer laser treatment}, journal = { Jpn. J. Appl. Phys.}, volume = {41}, year = {2002}, pages = {6132-6136}, author = {K. J. Chen, , ,,, and W.K. Hong and Lin, C. P. and K. H. Chen and L.C. Chen* and H. C. Cheng} } @article {1513, title = {Low temperature growth of aligned carbon nanotubes in large area}, journal = {Int. J. of Modern Phys.}, volume = {B16}, year = {2002}, pages = {853-859}, author = {P.H. Lin and C.R. Lin and L. C. Chen and K.H. Chen*} } @article {1520, title = {Phase and thickness dependence of thermal diffusivity in SiCxNy and BCxNy,}, journal = {Thin Solid Films}, volume = {420}, year = {2002}, pages = {205-211}, author = {S. Chattopadhyay and L.C. Chen* and S. C. Chien and S.T. Lin and C. T. Wu and K. H. Chen} } @article {1519, title = {Selective-area growth of InN nanowires on gold-patterned Si(100) substrates}, journal = {Appl. Phys. Lett.}, volume = {81}, year = {2002}, pages = {22-24}, author = {C. H. Liang and L.C. Chen* and J.S. Hwang and K. H. Chen and Y. T. Hung and Y.F. Chen} } @article {1516, title = {Spectroscopic studies of nitrogenated amorphous carbon films prepared by ion beam sputtering}, journal = {J. Appl. Phys.}, volume = {91}, year = {2002}, pages = {4944-4955}, author = {D. Das* and K. H. Chen and S. Chattopadhyay and L. C. Chen} } @article {1512, title = {Thermal diffusivity in diamond, SiCxNy and BCxNy}, journal = {Diamond Relat. Mater}, volume = {11}, year = {2002}, pages = {708-713}, author = {S. Chattopadhyay* and S. C. Chien and L. C. Chen and K. H. Chen and G. Lehmann and P. Hess} } @article {1495, title = {Bonding characterization and nano-indentation study of the amorphous SiCxNy films with and without hydrogen incorporation}, journal = {Diamond Relat. Mater.}, volume = {10}, year = {2001}, pages = {1916-1920}, author = {H.C. Lo and J.J. Wu and C.Y. Wen and T.S. Wong and S.T. Lin and K.H. Chen* and L. C. Chen} } @article {1491, title = {Carbon nanotubes growth by rapid thermal processing}, journal = {Diamond and Related Materials}, volume = {10}, year = {2001}, pages = {1810-1813}, author = {K.H. Chen* and T.S. Wong and C.T. Wang and L. C. Chen and K.J. Ma} } @article {1489, title = {Catalyst-free growth of transparent SiCN nanorods}, journal = {J. Phys. \& Chem. of Solids}, volume = {62}, year = {2001}, pages = {1567-1576}, author = {L.C. Chen* and S.W. Chang and Chang, C. S. and C.Y. Wen and J.-J. Wu and Y.F. Chen and Y.S. Huang and K. H. Chen} } @article {1496, title = {Catalytic growth and characterization of gallium nitride nanowires}, journal = {J. Am. Chem. Soc.}, volume = {123}, year = {2001}, pages = {2791-2798}, author = {C.-C. Chen* and C.-C. Yeh and Chen, C. H. and M.Y. Yu and H.L. Liu and J.J. Wu and K. H. Chen and L. C. Chen and J.Y. Peng and Y.F. Chen} } @article {1501, title = {Effect of dilution gas on SiCN films growth using methylamine}, journal = {Materials Chemistry and Physics}, volume = {72}, year = {2001}, pages = {240-244}, author = {J.J. Wu and K. H. Chen and C.Y. Wen and L.C. Chen* and Y.-C. Yu and C.-W. Wang and E.-K. Lin} } @article {1490, title = {Electron beam induced formation of carbon nanorods}, journal = {J. Phys. Chem. of Solids}, volume = {62}, year = {2001}, pages = {1561-1565}, author = {K. H. Chen and C.Y. Wen and C. T. Wu and L. C. Chen and C.T. Wang and K.J. Ma} } @article {1494, title = {Electronic and bonding structures of amorphous Si-C-N thin films by X-ray-absorption spectroscopy}, journal = {Appl. Phys. Lett.}, volume = {79}, year = {2001}, pages = {2393-2395}, author = {H.M. Tsai, ,, , and and C.J. Jan and J.W. Chiou and W.F. Pong* and K. H. Chen and et al} } @article {1493, title = {Electronic structure of the Fe-layer catalyzed carbon nanotubes studies by X-ray-absorption spectroscopy}, journal = {Appl. Phys. Lett.}, volume = {79}, year = {2001}, pages = {3179-3181}, author = {C.L. Yeh and C.J. Jan and J.W. Chiou and W.F. Pong* and M.H. Tsai and Y.K. Chang and Y.Y. Chen and J.F. Lee and P.K. Tseng and S.L. Wei and C.Y. Wen and L. C. Chen and K. H. Chen} } @article {1506, title = {Fabrication and characterization of carbon nanotubes triodes}, journal = {Jpn. J. Appl. Phys.}, volume = {40}, year = {2001}, pages = {3468-3473}, author = {W.K. Hong and K. H. Chen and L. C. Chen and F. G. Tarntair and K. J. Chen and J. B. Lin and H. C. Cheng*} } @article {1508, title = {Fabrication and characterization of low turn-on voltage carbon nanotube field emission triodes}, journal = {Electrochemical and Solid-State Letters}, volume = {4 (8)}, year = {2001}, pages = {H15-17 }, author = {H. C. Cheng* and K. J. Chen and W.K. Hong and F. G. Tarntair and J. B. Lin and K. H. Chen and L. C. Chen} } @article {1510, title = {Field electron emission from C-based emitters and devices}, journal = {New Diamond and Frontier Carbon Technology}, volume = {11}, year = {2001}, pages = {249-263}, author = {L.C. Chen* and W.K. Hong and F. G. Tarntair and K. J. Chen and J. B. Lin and P. D. Kichambare and H. C. Cheng and K. H. Chen} } @article {1502, title = {Field electron emission from carbon-based emitters and devices}, journal = {New Diamond and Frontier Carbon Tech.}, volume = {11}, year = {2001}, pages = {249}, author = {L.C. Chen* and W.K. Hong and F. G. Tarntair and K. J. Chen and J. B. Lin and P. D. Kichambare and H. C. Cheng and K. H. Chen} } @article {1488, title = {Field emission properties of two-layer structured SiCN films}, journal = {Surface \& Coating Tech.}, volume = {137}, year = {2001}, pages = {152-157}, author = {F. G. Tarntair and J.J. Wu and K. H. Chen and C.Y. Wen and L.C. Chen* and H. C. Cheng} } @article {1487, title = {Growth of highly transparent nano-crystalline diamond films and a spectroscopic study of the growth}, journal = { J. Appl. Phys.}, volume = {89}, year = {2001}, pages = {753-759}, author = {L.C. Chen*, ,, , , and and P. D. Kichambare and K. H. Chen and J.J. Wu and J.R. Yang and S.T. Lin} } @article {1505, title = {Integration of thin film transistor controlled carbon nanotubes for field-emission devices}, journal = {Electrochemical and Solid-State Letters}, volume = {4 (4)}, year = {2001}, pages = {H5-H7}, author = {H. C. Cheng* and W.K. Hong and F. G. Tarntair and K. J. Chen and J. B. Lin and K. H. Chen and L. C. Chen} } @article {1503, title = {Ion beam sputtered growth and mechanical properties of SiCN films}, journal = {J. of Mater. Sci. and Engineering}, volume = {33}, year = {2001}, pages = {38}, author = {C.T. Wang and K.J. Ma* and K. H. Chen and L. C. Chen and P. D. Kichambare} } @article {1499, title = {Laser irradiation of carbon nanotubes}, journal = {Materials Chemistry and Physics}, volume = {72}, year = {2001}, pages = {218-222}, author = {P.D. Kichambare,,, , , and and L.C. Chen* and C.T. Wang and K.J. Ma and C. T. Wu and K. H. Chen} } @article {1509, title = {Low turn-on voltage field emission triodes with selective growth of carbon nanotubes}, journal = {IEEE Electron Device Lett.}, volume = {22}, year = {2001}, pages = {516-518}, author = {K. J. Chen and W.K. Hong and J. B. Lin and L. C. Chen and K. H. Chen and H. C. Cheng*} } @article {1497, title = {Near-field images of the AgOx super-resolution near-field structure}, journal = {Appl. Phys. Lett.}, volume = {78}, year = {2001}, pages = {685-687}, author = {W.C. Liu, , , , and and C.Y. Wen and K. H. Chen and W.C. Lin and D.P. Tsai*} } @article {1500, title = {Preparation and characterization of carbon nanotubes encapsulated GaN nanowires}, journal = {J. Phys. Chem. of Solids}, volume = {62}, year = {2001}, pages = {1577-1586}, author = {C.-C. Chen*, , , , , ,,, ,, and and C.-C. Yeh and C.-H. Liang and C.-C. Lee and C.-H. Chen and M.-Y. Yu and H.-L. Liu and L. C. Chen and Y.S. Lin and K.J. Ma and K. H. Chen} } @article {1507, title = {Resistive heated MOCVD deposition of InN films}, journal = {Materials Chem. and Phys.}, volume = {72}, year = {2001}, pages = {290-295}, author = {J.S. Hwang and Lee, C. H. and F.H. Yang and K. H. Chen and L.G. Hwa and Y.J. Yang* and L. C. Chen} } @article {1492, title = {Structure and elastic properties of amorphous SiCN films}, journal = {Phys. Rev.}, volume = {B64}, year = {2001}, pages = {165305-(1-10)}, author = {G. Lehmann and P. Hess* and J.-J. Wu and C. T. Wu and K. H. Chen and L. C. Chen and H.-Y. Lee} } @article {1504, title = {Thermal diffusivity in amorphous silicon carbon nitride thin films by the traveling wave technique}, journal = {Appl. Phys. Lett.}, volume = {79}, year = {2001}, pages = {332-334}, author = {S. Chattopadhyay and L.C. Chen* and C. T. Wu and K. H. Chen and J.S. Wu and Y.F. Chen and G. Lehmann and P. Hess} } @article {1498, title = {X-ray absorption studies of carbon-related materials}, journal = { J. of Synchrotron Radiation}, volume = {8}, year = {2001}, pages = {145-149 }, author = {W.F. Pong* and C.L. Yeh and Y.D. Chang and M.-H. Tsai and Y.K. Chang and Y.Y. Chen and J.F. Lee and S.L. Wei and C.Y. Wen and L. C. Chen and K. H. Chen and I.N. Lin and H.F. Cheng} } @article {1476, title = {Comparative studies in field emission properties of carbon-based materials}, journal = {Diamond \& Related Materials}, volume = {9}, year = {2000}, pages = {1249-1256}, author = {K. H. Chen and J.J. Wu and L. C. Chen and C.-Y. Wen and P. D. Kichambare and F. G. Tarntair and P.F. Kuo and S.W. Chang and Y.F. Chen} } @article {1479, title = {Effect of carbon sources on SiCN films growth in an electron cyclotron resonance plasma chemical vapor deposition reactor}, journal = {Diamond \& Related Materials}, volume = {9}, year = {2000}, pages = {556-561}, author = {J.J. Wu and K. H. Chen and C.-Y. Wen and L. C. Chen and H.J. Lo and S.T. Lin} } @article {1469, title = {Effect of hydrogen addition on SiCN films growth in an electron cyclotron resonance plasma chemical vapor deposition reactor}, journal = {J. Mater. Chem.}, volume = {10}, year = {2000}, pages = {783-787 }, author = {J.-J. Wu and K. H. Chen and C.-Y. Wen and L. C. Chen and Y.-C. Yu and C.-W. Wang and E.-K. Lin} } @article {1483, title = {Enhancement in field emission of silicon microtips by bias-assisted carburization}, journal = {J. Vac. Sci. Tech.}, volume = {B18}, year = {2000}, pages = {2722-2729}, author = {P. D. Kichambare and F. G. Tarntair and T.Y. Wang and L. C. Chen and K. H. Chen and H. C. Cheng} } @article {1478, title = {Field emission from quasi-aligned SiCN nanorods}, journal = {Appl. Phys. Lett.}, volume = {76}, year = {2000}, pages = {20}, author = {F. G. Tarntair and C.Y. Wen and L. C. Chen and J.J. Wu and K. H. Chen and P.F. Kuo and S.W. Chang and Y.F. Chen and W.K. Hong and H. C. Cheng} } @article {1475, title = {Growth, characterization, and properties of carbon nitride with and without silicon addition}, journal = { Int. J. of Modern Phys}, volume = {B14}, year = {2000}, pages = {333-348}, author = {L. C. Chen and C. T. Wu and J.J. Wu and K. H. Chen} } @article {1481, title = {Growth, characterization, optical and X-ray absorption studies of nano-crystalline diamond films}, journal = {Diamond \& Related Materials}, volume = {9}, year = {2000}, pages = {877-882}, author = {L. C. Chen and T.Y. Wang and J.R. Yang and K. H. Chen and D. M. Bhusari and Y.K. Chang and H.H. Hsieh and W.F. Pong} } @article {1485, title = {High current density field emission from arrays of carbon nanotubes and diamond-clad Si tips}, journal = {J. Vac. Sci. Tech}, volume = {B 18}, year = {2000}, pages = {1207-1211}, author = {F. G. Tarntair and L. C. Chen and S.L. Wei and W.K. Hong and K. H. Chen and H. C. Cheng} } @article {1477, title = {Implication from using two different bio-molecular materials to synthesize crystalline carbon nitride films}, journal = {J. Vac. Sci. Tech. B}, volume = {18}, year = {2000}, pages = {1207}, author = {Kuo, C. T. and T.R. Lu and L. C. Chen and K. H. Chen} } @article {1480, title = {Interaction of atomic hydrogen with a Ge(111) surface: LEED and surface Raman studies}, journal = {Surface Science}, volume = {445}, year = {2000}, pages = {139-150}, author = {Su, C. and C.S. Tsai and T.E. Lin and K. H. Chen and Wang, J. K. and Lin, J. C.} } @article {1486, title = {Mechanism of luminescence in InGaN multiple quantum wells}, journal = {Appl. Phys. Lett.}, volume = {76}, year = {2000}, pages = {3712-3714}, author = {H.C. Yang and P.F. Kuo and T.Y. Lin and Y.F. Chen and K. H. Chen and L. C. Chen and J.I. Chyi} } @article {1474, title = {Piezoreflectance study of a Fe-containing silicon carbon nitride crystalline film}, journal = { J. Appl. Phys.}, volume = {87}, year = {2000}, pages = {280-284}, author = {C.H. Hsieh and Y.S. Huang and K.K. Tiong and C.W. Fan and Y.F. Chen and L. C. Chen and J.J. Wu and K. H. Chen} } @article {1482, title = {Piezoreflectance study of silicon carbon nitride nanorods}, journal = {Appl. Phys. Lett.}, volume = {76}, year = {2000}, pages = {2044-2046}, author = {C.H. Hsieh and Y.S. Huang and P.F. Kuo and Y.F. Chen and L. C. Chen and J.J. Wu and K. H. Chen and K.K. Tiong} } @article {1470, title = {Surface-enhanced Raman analysis of the diamond films by using different metals}, journal = {Materials Letters}, volume = {42}, year = {2000}, pages = {162-165}, author = {B.R. Huang and K. H. Chen and W.Z. Ke} } @article {1471, title = {Crystalline SiCN: ahard material rivals to cubic BN}, journal = {Thin Solid Films}, volume = {355}, year = {1999}, pages = {112-116}, author = {L. C. Chen and K. H. Chen and S.L. Wei and P. D. Kichambare and J.J. Wu and T.R. Lu and Kuo, C. T.} } @article {1473, title = {Deposition of silicon carbon nitride by ion-beam sputtering}, journal = {Thin Solid Films}, volume = {355}, year = {1999}, pages = {417-422}, author = {J.J. Wu and C. T. Wu and Y.C. Liao and T.R. Lu and L. C. Chen and K. H. Chen and L.G. Hwa and Kuo, C. T. and K.J. Ling} } @article {1461, title = {Effect of target materials on crystalline carbon nitride films preparation by ion beam sputtering}, journal = {Diamond \& Related Materials}, volume = {8}, year = {1999}, pages = {1724-1729}, author = {Kuo, C. T. and L. C. Chen and K. H. Chen and T.M. Chen and T.R. Lu} } @article {1467, title = {Effect of Target Materials on Crystalline Carbon Nitride Films Preparation by Ion Beam Sputtering}, journal = {Diamond \& Related Materials}, volume = {8}, year = {1999}, pages = {1724}, author = {Kuo, C. T. and L. C. Chen and K. H. Chen and T.M. Chen and T.R. Lu} } @article {1463, title = {Ellipsometric study of carbon nitride thin films with and without silicon addition}, journal = {Diamond \& Related Materials}, volume = {8}, year = {1999}, pages = {618-622}, author = {L.C. Chen* and H.Y. Lin and C.S. Wong and K. H. Chen and S.T. Lin and Y. C. Yu and C. W. Wang and E. K. Lin and K.C. Lin} } @article {1464, title = {High purity nano-crystalline carbon nitride films prepared at ambient temperature by ion beam sputtering}, journal = {Surface and Coatings Technology }, volume = {115}, year = {1999}, pages = {116-122}, author = {T.R. Lu, , , , , and C.T. Kuo* and J.R. Yang and L. C. Chen and K. H. Chen and T.M. Chen} } @article {1462, title = {Nano-carbon nitride synthesis from a bio-molecular target for ion beam sputtering at low temperature}, journal = {Diamond and Related Materials}, volume = {8}, year = {1999}, pages = {605-609}, author = {J.J. Wu and T.R. Lu and C. T. Wu and T.Y. Wang and L. C. Chen and K. H. Chen and Kuo, C. T. and Y. C. Yu and C. W. Wang and E. K. Lin} } @article {1460, title = {Quantum confinement effect in diamond nanocrystals studied by X-Ray-absorption spectroscopy}, journal = {Phys. Rev. Lett.}, volume = {82}, year = {1999}, pages = {5377-5380}, author = {Y.K. Chang and H.H. Hsieh and W.F. Pong* and M.-H. Tsai and F.Z. Chien and P.K. Tseng and L. C. Chen and T.Y. Wang and K. H. Chen and D. M. Bhusari and J.R. Yan and S.T. Lin} } @article {1466, title = {Raman Spectroscopic Studies of the Thermal Decomposition of Molybdenum Oxide/2,2{\textquoteright}-Bipyridine Compounds}, journal = {Applied Spectroscopy}, volume = {9}, year = {1999}, pages = {1083}, author = {Jen Twu and Y.Y. Yu and C.W. Tang and G.J. Wang and K. H. Chen} } @article {1465, title = {Wide Band Gap Silicon Carbon Nitride Films Deposited by Electron Cyclotron Resonance Plasma Chemical Vapor Deposition}, journal = {Thin Solid Films}, volume = {355-356}, year = {1999}, pages = {205}, author = {K. H. Chen and J.J. Wu and C.Y. Wen and L. C. Chen and C.W. Fan and P.F. Kuo and Y.F. Chen and Y.S. Huang} } @article {1472, title = {X-ray-absorption of Si-C-N thin films: acomparison between crystalline and amorphous phases}, journal = {J. Appl. Phys.}, volume = {86}, year = {1999}, pages = {5609-5613}, author = {Y.K. Chang and H.H. Hsieh and W.F. Pong and M.H. Tsai and T.E. Dann and F.Z. Chien and P.K. Tseng and L. C. Chen and S.L. Wei and K. H. Chen and J.J. Wu and Y.F. Chen} } @article {1220, title = {Crystalline silicon carbon nitride: a wide band gap semiconductor}, journal = {Appl. Phys. Lett.}, volume = {72}, year = {1998}, pages = {2463-2465}, author = {L. C. Chen and C.K. Chen and S.L. Wei and D. M. Bhusari and K. H. Chen and Y.F. Chen and Y.C. Jong and Y.S. Huang} } @article {1227, title = {Crystalline Silicon Carbon Nitride: A Wide Band Gap Semiconductor}, journal = {Appl. Phys. Lett.}, volume = {72}, year = {1998}, pages = {2463}, author = {L. C. Chen and C.K. Chen and S.L. Wei and D. M. Bhusari and K. H. Chen and Y.F. Chen and Y.C. Jong and Y.S. Huang} } @article {1222, title = {Effect of Substrate Pretreatment and Methane Fraction on the Optical Transparency of Nano-crystalline Diamond Thin Films}, journal = {J. Mater. Res.}, volume = {13}, year = {1998}, pages = {1769}, author = {D. M. Bhusari and J.R. Yang and T.Y. Wang and K. H. Chen and S.T. Lin and L. C. Chen} } @article {1224, title = {Electronic and Atomic Structures of Si-C-N Thin Film by X-ray-absorption Spectroscopy}, journal = {J. Electron Spectroscopy and Related Pheno.}, volume = {92}, year = {1998}, pages = {115}, author = {W.F. Pong and Y.K. Chang and H.H. Hsieh and M.H. Tsai and K.H. Lee and T.E. Dann and F.Z. Chien and P.K. Tseng and K.L. Tsang and W.K. Su and L. C. Chen and S.L. Wei and K. H. Chen and D. M. Bhusari and Y.F. Chen} } @article {1228, title = {Electronic and Atomic Structures of SiCN Thin Film by X-ray Absorption Spectroscopy and Theoretical Calculations}, journal = { Phys. Rev.}, volume = {B58}, year = {1998}, pages = {9018}, author = {Y.K. Chang and H.H. Hsieh and W.F. Pong and M.H. Tsai and K.H. Lee and T.E. Dann and F.Z. Chien and P.K. Tseng and K.L. Tsang and W.K. Su and L. C. Chen and S.L. Wei and K. H. Chen and D. M. Bhusari and Y.F. Chen} } @article {1221, title = {Highly transparent nano-crystalline diamond films grown by microwave CVD}, journal = {Solid State Comm.}, volume = {107}, year = {1998}, pages = {301-305}, author = {D. M. Bhusari and K. H. Chen and T.R. Yang and S.T. Lin and T.Y. Wang and L. C. Chen} } @article {1219, title = {Highly transparent nano-crystalline diamond films via substrate pretreatment and methane fraction optimization}, journal = {Thin Solid Films}, volume = {332}, year = {1998}, pages = {34-39}, author = {K.H. Chen* and D. M. Bhusari and J.R. Yang and S.T. Lin and T.Y. Wang and L. C. Chen} } @article {1223, title = {Novel Two Stage Method for Growth of Highly Transparent Nano-crystalline Diamond Films}, journal = {Mater. Lett.}, volume = {36}, year = {1998}, pages = {279}, author = {D. M. Bhusari and J.R. Yang and T.Y. Wang and K. H. Chen and L. C. Chen} } @article {1229, title = {Sputtering Process of Carbon Nitride Films by Using a Novel Bio-Molecular C-N Containing Target}, journal = {Thin Solid Films}, volume = {332}, year = {1998}, pages = {74}, author = {T.R. Lu and L. C. Chen and K. H. Chen and D. M. Bhusari and T.M. Chen and Kuo, C. T.} } @article {1230, title = {Synthesis and Characterization of an Organic-inorganic Hybrid Compound: [WO3(2,2{\textquoteright}-bipyridine)]}, journal = {J. Matter. Chem.}, volume = {8}, year = {1998}, pages = {2181}, author = {Wu, J. T. and T.H. Fang and C.F. Hsu and Y.Y. Yu and G.J. Wang and C.W. Tang and K. H. Chen and K.H. Lii} } @article {1225, title = {The Use of a Bio-molecular Target for Crystalline Carbon Nitride Film Deposition by Ar Ion-Beam Sputtering without Other Source of Nitrogen}, journal = {Appl. Phys. Lett.}, volume = {72}, year = {1998}, pages = {3449}, author = {L. C. Chen and T.R. Lu and D. M. Bhusari and J.J. Wu and K. H. Chen and Kuo, C. T. and T.M. Chen} } @article {1216, title = {Composition of SiCN Crystals Consisting of a Predominantly Carbon-nitride Network}, journal = {J. Mater. Res.}, volume = {12}, year = {1997}, pages = {322}, author = {D. M. Bhusari and C.K. Chen and K. H. Chen and T. J. Chuang and L. C. Chen and M. C. Lin} } @article {1212, title = {Raman Spectroscopic Studies of Sulfation of Cerium Oxide}, journal = {Appl. Catalysis B : Environmental}, volume = {12}, year = {1997}, pages = {309-324}, author = {Wu, J. T. and C.J. Chuang and K.I. Chang and C.H. Yang and K. H. Chen} } @article {1217, title = {Raman Spectroscopic Studies of the Thermal Decomposition Mechanism of Ammonium Metavanadate}, journal = {J. Mater. Chem}, volume = {7}, year = {1997}, pages = {2273}, author = {Wu, J. T. and C.F. Shih and T. H. Guo and K. H. Chen} } @article {1213, title = {Si-Containing Crystalline Carbon Nitride Derived by Microwave Plasma-Enhanced Chemical Vapor Deposition}, journal = {Thin Solid Film}, volume = {303}, year = {1997}, pages = {66-75}, author = {L. C. Chen and D. M. Bhusari and Yang, C. Y. and K. H. Chen and T. J. Chuang and M. C. Lin and C.K. Chen and Y.F. Huang} } @article {1215, title = {Temperature dependence of direct band gap of Si-containing carbon nitride crystalline films}, journal = {Phys. Rev. B}, volume = {56}, year = {1997}, pages = {6498-6501}, author = {D.Y. Lin and C.F. Li and Y.S. Huang and Y.C. Jong and Y.F. Chen and L. C. Chen and C.K. Chen and K. H. Chen and D. M. Bhusari} } @article {1214, title = {Traveling wave method for measurement of thermal conductivity of thin films}, journal = {Rev. Sci. Instrum.}, volume = {68(11)}, year = {1997}, pages = {4180-4183}, author = {D. M. Bhusari and C.W. Teng and K. H. Chen and L. C. Chen} } @article {1207, title = {Formation of Crystalline Silicon Carbon Nitride Films by Microwave Plasma-Enhanced CVD}, journal = {Diamond and Related Materials}, volume = {5}, year = {1996}, pages = {514}, author = {L. C. Chen and Yang, C. Y. and D. M. Bhusari and K. H. Chen and M. C. Lin and Lin, J. C. and T. J. Chuang} } @article {1211, title = {Large Area Epitaxial Growth of Diamond Films}, journal = {J. of the Vacuum Soc. of Taiwan}, volume = {9}, year = {1996}, pages = {18}, author = {J.Y. Wu and K. H. Chen} } @article {1210, title = {The vibrational dephasing and relaxation of CH and CD stretches on diamond surfaces: An anomaly}, journal = {J. Chem. Phys.}, volume = {105}, year = {1996}, pages = {3975-3983}, author = {Lin, J. C. and K. H. Chen and H.C. Chang and C.S. Tsai and C.E. Lin and Wang, J. K.} } @article {1206, title = {High-temperature Raman Study in CVD Diamond}, journal = {Thin Solid Films}, volume = {270}, year = {1995}, pages = {143}, author = {K. H. Chen and Y.L. Lai and L. C. Chen and J.Y. Wu and Kao, F. J.} } @article {1204, title = {Infrared spectroscopy and vibrational relaxation of CHx and CDx stretches on synthetic nanocrystal diamond surfaces}, journal = {J. Phys. Chem.}, volume = {99}, year = {1995}, pages = {11081}, author = {H.C. Chang and Lin, J. C. and J.Y. Wu and K. H. Chen} } @article {1203, title = {Micro-Raman for Diamond Film Stress Analysis}, journal = {Diamond and Related Materials}, volume = {4}, year = {1995}, pages = {460}, author = {K. H. Chen and Y.L. Lai and Lin, J. C. and K.J. Song and L. C. Chen and C.Y. Huang} } @article {1202, title = {Coherent Anti-Stokes Raman Spectroscopy of Infrared Multiphoton Excited Molecules}, journal = {J. Chem. Phys.}, volume = {101}, year = {1994}, pages = {8517-8528}, author = {S. Deliwala and J. Goldman and K. H. Chen and C.-Z. Lu and E. Mazur} } @article {1201, title = {Temperature and Density Distribution of H2 and H in Hot Filament CVD of Diamond Films}, journal = {J. Appl. Phys.}, volume = {71}, year = {1992}, pages = {1485}, author = {K. H. Chen and M.C. Chuang and M. Penney and W. F. Banholzer} } @article {1200, title = {Durect Evidence for1-mode Excitation in the Infrared Multiphoton Excited SO2}, journal = {Chem. Phys. Lett.}, volume = {176}, year = {1991}, pages = {355}, author = {C.Z. Lu and J. Goldman and S. Deliwala and K. H. Chen and E. Mazur} } @article {1199, title = {Multiplex Pure Rotational Coherent Anti-Stokes Raman Spectroscopy in a Molecular Beam}, journal = {J. Raman Spectroscopy}, volume = {21}, year = {1990}, pages = {819}, author = {N. Bloembergen and K. H. Chen and C.Z. Lu and E. Mazur} } @article {1198, title = {Multiplex Coherent Anti-Stokes Raman Spectroscopy Study of Infrared-multiphoton-excited OCS}, journal = {J. Chem. Phys.}, volume = {91}, year = {1989}, pages = {1462}, author = {K. H. Chen and C.Z. Lu and L. Avilas and E. Mazur and N. Bloembergen and M. J. Shultz} } @article {1194, title = {Raman Spectroscopy of Infrared Multiphoton Excited Molecules}, journal = {Laser Chem.}, volume = {8}, year = {1988}, pages = {97}, author = {J. Wang and K. H. Chen and E. Mazur} } @article {1193, title = {Non-thermal Intramolecular Vibrational Energy Distribution in Infrared-multiphoton-excited CF2Cl2}, journal = {Phys. Rev. Lett}, volume = {59}, year = {1987}, pages = {2728}, author = {K. H. Chen and J. Wang and E. Mazur} } @article {1190, title = {Time-resolved Spontaneous Raman Spectroscopy of Infrared-multiphoton-excited SF6}, journal = {Phys. Rev.A}, volume = {34}, year = {1986}, pages = {3892}, author = {J. Wang and K. H. Chen and E. Mazur} } @article {2569, title = {Directly-grown hierarchical carbon nanotube@polypyrrole core-shell hybrid for high-performance flexible supercapacitors}, journal = {ChemSusChem }, volume = {9}, year = {2016}, pages = {370-378}, author = {Y. Yesi and I. Shown and A. Ganguly and T.T. Ngo and L. C. Chen and K. H. Chen} } @article {2568, title = {Enhancement of charge collection at shorter wave lengths from alternative CdS deposition conditions for high efficiency CZTSSe solar cells}, journal = {Solar Energy Materials \& Solar Cells }, volume = {149}, year = {2016}, pages = {49-54 }, author = {V. Tunuguntla and W.C. Chen and T.D. Newman and Hsieh, M. C. and S.H. Lu and Su, C. and L. C. Chen and K. H. Chen} } @article {2572, title = {A facile and green synthesis of copper zinc tin sulfide materials for thin film photovoltaics}, journal = {Thin Solid Films}, year = {2016}, author = {Y.R. Lin and T.C. Chou and L.K. Liu and L. C. Chen and K. H. Chen} } @article {2563, title = {Bifacial sodium-incorporated treatments: tailoring deep traps and enhancing carrier transport properties in Cu2ZnSnS4 solar cells}, journal = {Nano Energy }, volume = {16}, year = {2015}, pages = {438}, author = {Y.R. Lin and V. Tunuguntla and S.Y. Wei and W.C. Chen and D. Wong and C.H. Lai and L.K. Liu and L. C. Chen and K. H. Chen} } @article {2562, title = {Enhanced thermoelectric performance of GeTe-rich germanium antimony tellurides through the control of composition and structure}, journal = {CrystEngComm, }, volume = {17}, year = {2015}, pages = {3440}, author = {R. Sankar and D. P. Wong and C.S. Chi and W.L. Chien and J.S. Hwang and F. C. Chou and L. C. Chen and K. H. Chen} } @article {2565, title = {Side Group of Poly(3-alkylthiophene)s Controlled Dispersion of Single-Walled Carbon Nanotubes for Transparent Conducting Film}, journal = {ACS Appl. Mater. \& Inter. }, volume = {7}, year = {2015}, pages = {4616 }, author = {W.C. Chen and H. T. Lien and T.W. Cheng and Su, C. and C.W. Chong and A. Ganguly and K. H. Chen and L.C. Chen*} } @article {2561, title = {Transparent, broadband, flexible, and bifacial-operable photodetectors containing a large-area graphene-gold oxide heterojunction}, journal = {ACS Nano }, volume = {9}, year = {2015}, pages = {5093-5103}, author = {Y.L. Liu and C. C. Yu and K.T. Lin and T.C. Yang and E.Y. Wang and H.L. Chen and L. C. Chen and K. H. Chen} } @article {2558, title = {Vertically aligned epitaxial graphene nanowalls with dominated nitrogen-doping for superior supercapacitors}, journal = {Carbon }, volume = {82}, year = {2015}, pages = {124-134}, author = {H.F. Yen and Y.Y. Horng and M.S. Hu and W.H. Yang and Y. Tai and K. H. Chen and L. C. Chen} } @booklet {4597, title = {Efficient Hydrogen Evolution Reaction in 2H-MoS2 Basal Planes Enhanced by Surface Electron Accumulation}, journal = {Catalysts}, volume = {14}, year = {2024}, note = {n/a}, month = {2024}, abstract = {

An innovative strategy has been developed to activate the basal planes in molybdenum disulfide (MoS2) to improve their electrocatalytic activity by controlling surface electron accumulation (SEA) through aging, annealing, and nitrogen-plasma treatments. The optimal hydrogen evolution reaction (HER) performance was obtained on the surface treated with nitrogen-plasma for 120 s. An overpotential of 0.20 V and a Tafel slope of 120 mV dec-1 were achieved for the optimized condition. The angle-resolved photoemission spectroscopy measurement confirmed the HER efficiency enhanced by the SEA conjugated with the sulfur vacancy active sites in the MoS2 basal planes. This study provides new insight into optimizing MoS2 catalysts for energy applications.

}, keywords = {hydrogen evolution reaction, molybdenum disulfide, overpotential, surface electron accumulation, Tafel slope}, isbn = {2073-4344}, author = {Krishnamoorthy, Vimal and Bangolla, Hemanth K. and Chen, Chi-Yang and Huang, Yu-Ting and Cheng, Cheng-Maw and Ulaganathan, Rajesh K. and Raman Sankar and Lee, Kuei-Yi and He-Yun Du and Li-Chyong Chen and Chen, Kuei-Hsieh and Ruei-San Chen} } @mastersthesis {1196, title = {Spontaneous Raman and Coherent Anti-Stokes Raman Spectroscopy of Infrared Multiphoton Excited Molecules}, year = {1989}, school = {Harvard University }, type = {PhD thesis}, author = {Kuei-Hsien Chen} }