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Luminescence Study for Band Discontinuity in Free-Standing CdZnS/ZnS Strained Layer Multi-Quantum Wells

Published online by Cambridge University Press:  21 February 2011

T. Yokogawa ,
T. Ishikawa ,
J. L. Merz  and
T. Taguchi
T. Yokogawa
Affiliation:
Department of Electrical and Computer Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, USA
T. Ishikawa
Affiliation:
Department of Electrical and Computer Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, USA
J. L. Merz
Affiliation:
Department of Electrical and Computer Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, USA
T. Taguchi
Affiliation:
Department of Electrical Engineering, Faculty of Engineering, Osaka University, Suita, Osaka 565, Japan
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Abstract

We present the results of luminescence studies for free-standing CdZnS/ZnS strained layer multi-quantum wells (MQWs). PL measurements of the CdZnS/ZnS MQW at 1.4 K show intense, sharp excitonic emission in blue-ultraviolet spectral region. The band discontinuity is estimated by an analysis of the luminescence results in terms of a finite-potential well model. A free-standing MQW is assumed. The calculated zero-stress band discontinuity is in extremely good agreement with the value from Harrison’s model.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 326: Symposium M – Growth, Processing, and Characterization of Semiconductor Heterostructures , 1993 , 495
Copyright
Copyright © Materials Research Society 1994

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