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Photoluminescence Study of GaAs Diffused with Li

Published online by Cambridge University Press:  25 February 2011

H. P. Gislason
Affiliation:
Science Institute, University of Iceland, Dunhaga 3, IS-107 Reykjavik, Iceland
E. Ö. Sveinbjörnsson
Affiliation:
Science Institute, University of Iceland, Dunhaga 3, IS-107 Reykjavik, Iceland
B. Monemar
Affiliation:
Linköping University, Department of Physics and Measurement Technology, S-58l 83 Linköping, Sweden
M. Linnarsson
Affiliation:
Linköping University, Department of Physics and Measurement Technology, S-58l 83 Linköping, Sweden
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Abstract

We present a detailed study of the photoluminescence (PL) properties of a wide range of GaAs material diffused with the group I element Li. The effects of the Li diffusion are investigated through its effects on existing photoluminescence bands in the as-grown material as well as the appearence of new such bands. Among new PL bands resulting from the Li doping of n-type and semi-insulating material the most pronounced ones are a strong deep band at 1.34 eV and shallower bands at 1.45 and 1.48 eV. The origin of these PL bands will be discussed.

Type
Research Article
Copyright
Copyright © Materials Research Society 1990

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