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Mechanisms of Visible Photoluminescence from Size-Controlled Silicon Nanoparticles

Published online by Cambridge University Press:  11 February 2011

Toshiharu Makino
Affiliation:
Advanced Technology Research Laboratories, Matsushita Electric Industrial Co., Ltd., 3–10–1 Higashimita, Tama-ku, Kawasaki 214–8501, Japan
Nobuyasu Suzuki
Affiliation:
Advanced Technology Research Laboratories, Matsushita Electric Industrial Co., Ltd., 3–10–1 Higashimita, Tama-ku, Kawasaki 214–8501, Japan
Yuka Yamada
Affiliation:
Advanced Technology Research Laboratories, Matsushita Electric Industrial Co., Ltd., 3–10–1 Higashimita, Tama-ku, Kawasaki 214–8501, Japan
Takehito Yoshida
Affiliation:
Advanced Technology Research Laboratories, Matsushita Electric Industrial Co., Ltd., 3–10–1 Higashimita, Tama-ku, Kawasaki 214–8501, Japan
Ikurou Umezu
Affiliation:
Advanced Technology Research Laboratories, Matsushita Electric Industrial Co., Ltd., 3–10–1 Higashimita, Tama-ku, Kawasaki 214–8501, Japan
Akira Sugimura
Affiliation:
Department of Physics, Faculty of Science and Engineering, Konan University, 8–9–1 Okamoto, Higashinada-ku, Kobe 658–8501, Japan
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Abstract

We have observed visible photoluminescence (PL) spectra (peak energy: 3.1 eV) of size-controlled silicon (Si) nanoparticles annealed in oxygen gas. The PL peak energy did not depend on the temperature, and the PL lifetime was relatively fast (on the order of nanoseconds). It was inferred that the visible PL was attributed to localized states in the oxidized surfaces of size-controlled Si nanoparticles. We also observed the PL excitation spectra and studied the excitation process. In order to elucidate mechanisms of the visible PL, excitation and recombination processes are discussed.

Type
Research Article
Copyright
Copyright © Materials Research Society 2003

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Footnotes

*

High Technology Research Center, Konan University, 8–9–1 Okamoto, Higashinada-ku, Kobe 658–8501, Japan

References

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