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Blue Light Emission from Silicon Ultrafine Particles

Published online by Cambridge University Press:  15 February 2011

Shinji Nozaki ,
S. Sato ,
H. Ono  and
H. Morisaki
Shinji Nozaki
Affiliation:
The University of Electro-Communications, Department of Communications and Systems, 1-5-1 Chofugaoka, Chofu-shi, Tokyo 182, Japan
S. Sato
Affiliation:
The University of Electro-Communications, Department of Communications and Systems, 1-5-1 Chofugaoka, Chofu-shi, Tokyo 182, Japan
H. Ono
Affiliation:
The University of Electro-Communications, Department of Communications and Systems, 1-5-1 Chofugaoka, Chofu-shi, Tokyo 182, Japan
H. Morisaki
Affiliation:
The University of Electro-Communications, Department of Communications and Systems, 1-5-1 Chofugaoka, Chofu-shi, Tokyo 182, Japan
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Abstract

The oxygen-containing silicon (Si) ultrafine particles have been deposited onto Si and SiO2 substrates by evaporation of Si powder in an oxygen-containing argon atmosphere. The asdeposited Si ultrafine particles exposed to the ultraviolet light emit blue light, which is strong enough to be seen with the naked eye. The blue light emission is associated with a broad photoluminescence (PL) peak at 2.7 eV, which is attributed to radiative recombination via a radiative recombination center. The proposed model with one radiative and two nonradiative recombination centers well explains the temperature-dependent PL peak intensity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 351: Symposium V – Molecularly Designed Ultrafine/Nanostructured Materials , 1994 , 399
Copyright
Copyright © Materials Research Society 1994

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References

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