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题名: Photoluminescence enhancement of porous silicon by organic cyano compounds
作者: Yin F;  Xiao XR;  Li XP;  Zhang ZZ;  Zhang BW;  Cao Y;  Li GH;  Wang ZP
发表日期: 1998
摘要: A pronounced photoluminescence enhancement on chemically oxidized porous silicon was induced by a series of organic cyano compounds including 1,2-dicyanoethylene (CE), 1,3-dicyanobenzene (1,3-CB), 1,4-dicyanobenzene (1,4-CB), 1-cyanonaphthalene (1-CN), and 9-cyanoanthracene (9-CA). Photoluminescence enhancement effects were reversible for all compounds studies in this work. A dependence of photoluminescence enhancement on the steric effect and the electronic characteristics of these compounds and the structure of the porous silicon substrates were analyzed in terms of the photoluminescence enhancing factors. Surface chemical composition examined by Fourier transform infrared (FTIR) spectra demonstrated that the surface Si-H bonds were not changed and no new luminescent compounds were formed on porous silicon surface during adsorption of cyano compounds. A mechanism based on induced surface states acting as radiative recombination centers by cyano compounds adsorption was suggested.
KOS主题词: Metric system;  Silicon;  Luminescence;  emission;  Surface;  wafers
刊名: JOURNAL OF PHYSICAL CHEMISTRY B
专题: 中国科学院半导体研究所(2009年前)_期刊论文

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Yin F; Xiao XR; Li XP; Zhang ZZ; Zhang BW; Cao Y; Li GH; Wang ZP .Photoluminescence enhancement of porous silicon by organic cyano compounds ,JOURNAL OF PHYSICAL CHEMISTRY B,1998,102(41):7978-7982
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