Visible photoluminescence from silicon nanopowders produced by silicon evaporation in a high-power electron beam

被引：0
|
作者：
M. D. Efremov
V. A. Volodin
D. V. Marin
S. A. Arzhannikova
S. V. Goryainov
A. I. Korchagin
V. V. Cherepkov
A. V. Lavrukhin
S. N. Fadeev
R. A. Salimov
S. P. Bardakhanov
机构：
[1] Russian Academy of Sciences,Institute of Semiconductor Physics, Siberian Division
[2] Russian Academy of Sciences,Institute of Mineralogy and Petrography, Siberian Division
[3] Russian Academy of Sciences,Budker Institute of Nuclear Physics, Siberian Division
[4] Russian Academy of Sciences,Institute of Theoretical and Applied Mechanics, Siberian Division
来源：
Journal of Experimental and Theoretical Physics Letters | 2004年 / 80卷
关键词：
63.22.+m; 78.40.Fy; 78.55.−m; 81.15.−z;
D O I：
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学科分类号：
摘要：
Silicon nanopowders produced by electron-beam-induced evaporation of a bulk silicon sample in an argon atmosphere are studied by the photoluminescence technique and Raman scattering spectroscopy. A photoluminescence peak in the visible region of the spectrum has been detected at room temperature in powders consisting of silicon nanocrystals. The strong short-wavelength shift of the photoluminescence peak can be attributed to the quantum size effect of electrons and holes in small silicon nanocrystals (about 2 nm). The size of silicon nanocrystals is determined by analyzing Raman spectra, and it is consistent with estimates obtained from photoluminescence data.
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页码：544 / 547
页数：3
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