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A Comparative Study of the Thin-Film CdTe Solar Cells with ZnSe/TCO and the CdS/TCO Buffer Layers

Published online by Cambridge University Press:  30 August 2011

Tamara Potlog ,
Nicolae Spalatu ,
Arvo Mere ,
Jaan Hiie  and
Valdek Mikli
Tamara Potlog
Affiliation:
Physics Department, Moldova State University, A. Mateevici str. 60, Chisinau, MD 2009 Republic of Moldova
Nicolae Spalatu
Affiliation:
Physics Department, Moldova State University, A. Mateevici str. 60, Chisinau, MD 2009 Republic of Moldova
Arvo Mere
Affiliation:
Department of Materials Science, Tallinn University of Technology, Ehitajate tee 5, Tallinn, 19086 Estonia
Jaan Hiie
Affiliation:
Department of Materials Science, Tallinn University of Technology, Ehitajate tee 5, Tallinn, 19086 Estonia
Valdek Mikli
Affiliation:
Department of Materials Science, Tallinn University of Technology, Ehitajate tee 5, Tallinn, 19086 Estonia
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Abstract

The growth of ZnSe and CdTe thin films by close spaced sublimation is examined. The investigations show that ZnSe films deposited on glass substrates are polycrystalline and exhibit wurtzite-zinc-blende polytypism. The CdTe films grown on glass/SnO2/ZnSe are polycrystalline and have an f.c.c. zinc-blende structure as in the case of a glass/SnO2/CdS buffer layer. The electric and photovoltaic parameters of ZnSe/CdTe solar cells depend on the ZnSe film thickness. Furthermore, it is shown for the first time that the best photovoltaic parameters are achieved using a Zn buffer layer at the interface between ZnSe and CdTe.

Keywords

thin filmII-VIphotovoltaic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1324: Symposium D – Compound Semiconductors for Energy Applications and Environmental Sustainability , 2011 , mrss11-1324-d06-02
Copyright
Copyright © Materials Research Society 2011

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References

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