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Photoluminescence And The Optimum Growth Conditions Of High Quality ZnS Epitaxial Layers

Published online by Cambridge University Press:  10 February 2011

Sungun Nam ,
Jongkwang Rhee ,
Young-Moon Yu ,
Byungsung O ,
Ki-Seon Lee ,
Y. D. Choi ,
H. J. Yun ,
Chang Soo Kim  and
Yang-June Jung
Sungun Nam
Affiliation:
Department of Physics, Chungnam National University, Taejon, Korea
Jongkwang Rhee
Affiliation:
Department of Physics, Chungnam National University, Taejon, Korea
Young-Moon Yu
Affiliation:
Department of Physics, Chungnam National University, Taejon, Korea
Byungsung O
Affiliation:
Department of Physics, Chungnam National University, Taejon, Korea
Ki-Seon Lee
Affiliation:
Department of Physics, Chungnam National University, Taejon, Korea
Y. D. Choi
Affiliation:
Department of Physics, Mokwon University, Taejon, Korea, [email protected]
H. J. Yun
Affiliation:
Department of Physics, Mokwon University, Taejon, Korea, [email protected]
Chang Soo Kim
Affiliation:
Korea Research Institute of Standards and Science, Yusong Taejon, Korea
Yang-June Jung
Affiliation:
Department of Physics, Mokpo National University, Muan, Korea
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Abstract

High quality ZnS epilayers were grown on GaAs and GaP substrates by hot wall epitaxy. The optimum temperature conditions for high quality ZnS epilayer were found. The photoluminescence(PL) spectrum of high quality ZnS epilayers showed sharp and narrow exciton peaks and no self-activated peaks. The room temperature energy gap of ZnS/GaAs was found to be 3.729 eV from the experimentally observed free exciton PL peaks. The temperature dependence of the PL intensity showed a two step quenching process and the temperature dependence of the PL linewidth broadening was tried to analyze in terms of exciton scattering process. From the splitting of the heavy hole and the light hole exciton peaks, the strain was identified.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 487: Symposium I – Semiconductors for Room-Temperature Radiation II , 1997 , 485
Copyright
Copyright © Materials Research Society 1998

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