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The study of properties of CdTe thin films deposited in Ar/O2 atmosphere*

Published online by Cambridge University Press:  31 January 2009

Y. Li
Affiliation:
College of Materials Science and Engineering, Sichuan University, 610064 Chengdu, P.R. China
B. Li*
Affiliation:
College of Materials Science and Engineering, Sichuan University, 610064 Chengdu, P.R. China
L. Feng
Affiliation:
College of Materials Science and Engineering, Sichuan University, 610064 Chengdu, P.R. China
J. Zheng
Affiliation:
College of Materials Science and Engineering, Sichuan University, 610064 Chengdu, P.R. China
W. Li
Affiliation:
College of Materials Science and Engineering, Sichuan University, 610064 Chengdu, P.R. China
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Abstract

The preparation and properties of CdTe thin films is of a primary interest for the CdTe thin film solar cells in both research and technology. In our work, polycrystalline CdTe thin films were deposited on pretreated glass substrates in Ar/O2 atmosphere by closed-space sublimation (CSS) technology. Structural property was studied by X-ray diffraction (XRD), surface morphology was observed by scanning electron microscopy (SEM). The optical and electrical properties of CdTe films were investigated, as well as the effects of deposition temperatures, the ratio of gas (Ar/O2) and post-treatment on the properties. The high quality CdTe layer was prepared based on the above studies. These layers were used to prepared CdS/CdTe/ZnTe:Cu solar cells. Efficiency of 13.38% and fill factor of 70.3% (0.501 cm2 area) for CdTe solar cells have been achieved.

Keywords

Type
Research Article
Copyright
© EDP Sciences, 2009

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Footnotes

*

Project supported by the National High Technology Research and Development Program of China (Grant No. 2003AA513010) and the National Natural Science Foundation of China (Grant No. 60506004).

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