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A Comparative Study of CdS Thin Films Grown by Chemical-Bath Deposition and Close-Spaced Sublimation

Published online by Cambridge University Press:  21 March 2011

H.R. Moutinho ,
D. Albin ,
Y. Yan ,
R.G. Dhere ,
C. Perkins ,
X. Li  and
M.M. Al-Jassim
H.R. Moutinho
Affiliation:
National Renewable Energy Laboratory 1617 Cole Blvd., Golden CO 80401, USA
D. Albin
Affiliation:
National Renewable Energy Laboratory 1617 Cole Blvd., Golden CO 80401, USA
Y. Yan
Affiliation:
National Renewable Energy Laboratory 1617 Cole Blvd., Golden CO 80401, USA
R.G. Dhere
Affiliation:
National Renewable Energy Laboratory 1617 Cole Blvd., Golden CO 80401, USA
C. Perkins
Affiliation:
National Renewable Energy Laboratory 1617 Cole Blvd., Golden CO 80401, USA
X. Li
Affiliation:
National Renewable Energy Laboratory 1617 Cole Blvd., Golden CO 80401, USA
M.M. Al-Jassim
Affiliation:
National Renewable Energy Laboratory 1617 Cole Blvd., Golden CO 80401, USA
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Abstract

In this work we study the properties of cadmium sulfide thin films grown by chemicalbath deposition and close-spaced sublimation, on SnO2/borosilicate glass and SnO2/silicon substrates, before and after treatment in vapor CdCl2 at 400°C for 5 minutes. The as-deposited CBD CdS films had cubic structure, poor crystallinity, and high density of planar defects. After the CdCl2 treatment, these films recrystallized to the hexagonal structure, with improved crystallinity and a decrease in the density of planar defects. The as-deposited CSS films had hexagonal structure, better crystallinity, and lower density of planar defects. The main effect of the CdCl2 treatment was a decrease in the intragrain strain in the films. The CBD films had smaller grains and provided a good conformal coverage over the SnO2 films. In contrast to these films, CSS CdS did not have any oxygen or chlorine in its bulk.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 668: Symposium H – II-IV Compound Semiconductor Photovoltaic Materials , 2001 , H7.4
Copyright
Copyright © Materials Research Society 2001

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References

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