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Laser Deposition of CdS Thin films on Various Substrates

Published online by Cambridge University Press:  26 February 2011

L. Shi ,
Y. Hashishin ,
S. Y. Dong  and
H. S. Kwok
L. Shi
Affiliation:
Department of Electrical and Computer Engineering State University of New York at Buffalo, Amherst, NY 14260
Y. Hashishin
Affiliation:
Kinki University, Dept. of Electrical Engineering, Faculty of Science & Technology, Osaka 577, Japan
S. Y. Dong
Affiliation:
Department of Electrical and Computer Engineering State University of New York at Buffalo, Amherst, NY 14260
H. S. Kwok
Affiliation:
Department of Electrical and Computer Engineering State University of New York at Buffalo, Amherst, NY 14260
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Abstract

We have deposited CdS thin films onto substrates such as glass, sapphire and high Tc YBCO superconducting films by Nd:YAG laser evaporation in a vacuum environment. X-ray diffraction, optical and electrical measurements were used to study the deposited CdS films. The films are highly oriented with c-axis perpendicular to the surface and are optically smooth. The effects of laser fluence, substrate temperature on the film quality will be discussed. Additionally, Indium doped CdS films were also grown on sapphire substrates by laser deposition. In-situ resistivity measurements were employed to study the film formation process during laser deposition. A simple model was given to explain the in-situ resistivity data. Finally, a deposition temperature window was found to produce good quality CdS/YBCO heterostructures. The superconducting transition temperature of the YBCO films was degraded to 68K from an original Tc of 85 K after CdS deposition. The degradation of the superconducting properties was found mainly due to the interactions in the interface region.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 201: Symposium A – Surface Chemistry and Beam-Solid Interactions , 1990 , 171
Copyright
Copyright © Materials Research Society 1991

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References

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