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Transparent Back Contacts in CdTe/CdS: Evaluation for Tandem Cells

Published online by Cambridge University Press:  01 February 2011

Anthony Vasko ,
Anthony Vasko ,
Alvin D Compaan  and
Sylvain Marsillac
Anthony Vasko
Affiliation:
avasko@physics.utoledo.edu, The University of Toledo, Physics and Astronomy, 2801 W Bancroft, Mail Stop 111, Toledo, OH, 43606, United States
Anthony Vasko
Affiliation:
avasko@physics.utoledo.edu, The University of Toledo, Physics and Astronomy, 2801 W Bancroft, Mail Stop 111, Toledo, OH, 43606, United States
Alvin D Compaan
Affiliation:
adc@physics.utoledo.edu, The University of Toledo, Physics and Astronomy, 2801 W Bancroft, Mail Stop 111, Toledo, OH, 43606, United States
Sylvain Marsillac
Affiliation:
sxm@physics.utoledo.edu, The University of Toledo, Physics and Astronomy, 2801 W Bancroft, Mail Stop 111, Toledo, OH, 43606, United States
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Abstract

CdS/CdTe solar cells with 2.3 μm CdTe were prepared with four different types of p+/n+ transparent back contacts (TBCs) - ZnTe:Cu/ZnO:Al, ZnTe:N/ZnO:Al, ZnTe:Cu/ITO, and ZnTe:N/ITO. ZnTe:N/ITO was found to give the best results. This back contact was then used to make cells of lesser (1.8 μm and 0.7 μm) CdTe thickness, in those cases giving good performance up to 9.1% efficiency. Bifacial J-V was performed on all cells with the optimum ZnTe:N/ITO back contact.

Keywords

photovoltaictransparent conductorsputtering
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1012: Symposium Y – Thin-Film Compound Semiconductor Photovoltaics-2007 , 2007 , 1012-Y02-08
Copyright
Copyright © Materials Research Society 2007

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References

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