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Blue Light Emission from Porous Silicon

Published online by Cambridge University Press:  28 February 2011

X. Y. Hou ,
G. Shi ,
W. Wang ,
F. L. Zhang ,
P. H. Hao ,
D. M. Huang ,
X. F. Jin  and
Xun Wang
X. Y. Hou
Affiliation:
Surface Physics Laboratory, Fudan University, Shanghai 200433, China
G. Shi
Affiliation:
Surface Physics Laboratory, Fudan University, Shanghai 200433, China
W. Wang
Affiliation:
Surface Physics Laboratory, Fudan University, Shanghai 200433, China
F. L. Zhang
Affiliation:
Surface Physics Laboratory, Fudan University, Shanghai 200433, China
P. H. Hao
Affiliation:
Surface Physics Laboratory, Fudan University, Shanghai 200433, China
D. M. Huang
Affiliation:
Surface Physics Laboratory, Fudan University, Shanghai 200433, China
X. F. Jin
Affiliation:
Surface Physics Laboratory, Fudan University, Shanghai 200433, China
Xun Wang
Affiliation:
Surface Physics Laboratory, Fudan University, Shanghai 200433, China
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Abstract

Through a post treatment of light emitting porous silicon in boilingwater, a large blue shift of its photoluminescence (PL) spectrum hasbeen observed and a stable blue-green light emission at the peak wavelength down to 500 nm is achieved. The effect of boiling water treatment is suggested to be a kind of oxidation, which could reduce thesize of the Si column, fill up some micropores and strengthen the Siskeleton. The photoluminescence microscopic observation shows that the surface of blue light emitting porous silicon is composed of manysmall uniformly light-emitting domains at the size of several tens of μm. Fourier transform infrared reflection (FTIR) measurements show that the formation of Si-H bonds is not responsible for the visible luminescence in the very thin Si wires.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 283: Symposium F – Microcrystalline Semiconductors–Materials Science and Devices , 1992 , 89
Copyright
Copyright © Materials Research Society 1993

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References

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