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Excitation Spectra of the Visible Photoluminescence of Anodized Porous Silicon

Published online by Cambridge University Press:  15 February 2011

Tomoyoshi Motohiro
Affiliation:
Toyota Central R&D Labs., Inc., 41-1, Nagakute-cho, Aichi-gun, Aichl-ken, 480-11, Japan
Tetsu Kachi
Affiliation:
Toyota Central R&D Labs., Inc., 41-1, Nagakute-cho, Aichi-gun, Aichl-ken, 480-11, Japan
Fusayoshi Miura
Affiliation:
Toyota Central R&D Labs., Inc., 41-1, Nagakute-cho, Aichi-gun, Aichl-ken, 480-11, Japan
Yasuhiko Takeda
Affiliation:
Toyota Central R&D Labs., Inc., 41-1, Nagakute-cho, Aichi-gun, Aichl-ken, 480-11, Japan
Shi-Aki Hyodo
Affiliation:
Toyota Central R&D Labs., Inc., 41-1, Nagakute-cho, Aichi-gun, Aichl-ken, 480-11, Japan
Shoji Noda
Affiliation:
Toyota Central R&D Labs., Inc., 41-1, Nagakute-cho, Aichi-gun, Aichl-ken, 480-11, Japan
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Abstract

Porous silicon samples photoluminous in orange, pink or greenish-yellow were formed by anodization. The shapes and wave length positions of their photoluminescence peaks were not influenced by the excitation wavelength. The photoluminescence intensity at any wavelength between 520nm and 800nm varied as a function of the excitation wavelength In accordance with the imaginary part of the spectral refractive index of bulk silicon. Thus the excitation process responsible for the visible photoluminescence of porous silicon seems to be bulk-silicon-like.

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

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References

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