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Research PapersNo Access

STUDY OF OPTICAL PROPERTIES OF POROUS SILICON PRODUCED BY METAL-AID

School of Materials Science and Engineering, Shanghai University, Shanghai 200072, P. R. China

State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, P. R. China

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State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, P. R. China

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School of Materials Science and Engineering, Shanghai University, Shanghai 200072, P. R. China

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State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, P. R. China

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State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China

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https://doi.org/10.1142/S0217984907014401Cited by:0 (Source: Crossref)

Abstract

We presented fluorescence spectra and cathode-luminescence spectra of as-prepared porous silicon under different preparation conditions. The luminescence of porous silicon may be related to the luminescent centers on porous silicon surface. The luminescent efficiency depended on the porosity of porous silicon, which further depended on the oxidative level of porous silicon with metal assistance. Under back illumination, the higher the oxidative degree of the metal is, the higher is the porosity and the luminescent efficiency of porous silicon. But under front illumination, the results exhibited an opposite tendency, which can be explained by the formation theory of PS.

Keywords:

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Vol. 21, No. 29

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History

Received 28 February 2007

Revised 27 August 2007

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