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Optical Properties of CdZnS-ZnS Strained-Layer Superiattices

Published online by Cambridge University Press:  21 February 2011

Yasuyuki Endoh  and
Tsunemasa Taguchi
Yasuyuki Endoh
Affiliation:
Department of Electrical Engineering, Faculty of Engineering, Osaka University, Suita, Osaka 565, JAPAN
Tsunemasa Taguchi
Affiliation:
Department of Electrical Engineering, Faculty of Engineering, Osaka University, Suita, Osaka 565, JAPAN
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Abstract

The Cd0.3 Zn0.7S-ZnS strained-layer superlattices has for the first time been fabricated on (100)GaAs substrates by a low-pressure MOCVD method. Exciton luminescence properties were investigated by the photoluminescence spectroscopies which show that the quantum confinement effect of excitons occurs in the CdZnS alloy layer. Temperature dependence of the exciton properties reveals a dominant scattering process which originates from exciton-phonon interaction(Γ10 =68meV). Nevertheless, the large exciton binding energy of about 166meV makes it possible to produce the exciton peak at room temperature. The effect of external electric field on the exciton intensity and its peak position is found and is tentatively interpreted in terms of a quantum confined Stark effect.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 161: Symposium E – Properties of II-VI Semiconductors: Bulk Crystals, Epitaxial Films, Quantum Well Structures, and Dilute Magnetic Systems , 1989 , 211
Copyright
Copyright © Materials Research Society 1990

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References

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