Quantum confinement effect in nano-diamond
奈米鑽石的量子侷限效應

Y. K. Chang, H. H. Hsieh, W. F. Pong, F. Z. Chien, P. K. Tseng, M. H. Tsai, L. C. Chen, T. Y. Wang, K. H. Chen, D. M. Bhusari, J. R. Yang, and S. T. Lin
Phys. Rev. Lett. 82, 5377 (1999)

This study measures the x-ray-absorption spectra of a series of nanodiamond thin films with grain diameters ranging from 3.5 nm to 5 mm at the C K -edge using the sample drain current mode at room temperature.  Resonance peaks resembling the C 1s core exciton are observed.  The exciton state and conduction band edge are found to shift to higher energies with the decrease of the grain size indicative of the presence of the quantum confinement effect.

本研究測量一系列由3.5奈米至50奈米鑽石顆粒組成鑽石薄膜的X光吸收光譜，由碳原子的X光吸收峰變化，我們測量到這些吸收峰因為鑽石顆粒趨小而往高能量移動，這是物理上重要的「量子侷限效應」首次在鑽石上被觀察到。