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Christina Gretener, Julian Perrenoud, Lukas Kranz, Luisa Kneer, Rafael Schmitt, Stephan Buecheler and Ayodhya N. Tiwari CdTe/CdS thin film solar cells grown in substrate configuration Progress in Photovoltaics: Research and Applications 21

Version of Record online: 13 JUN 2012 | DOI: 10.1002/pip.2233

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In this work, CdTe/CdS solar cells in substrate configuration were developed, and the results on different combinations of back contact materials are presented. A Cu-containing back contact buffer layer of MoO3, Te, and Cu leads to remarkably high VOC and fill factor of 768 mV and 68.6%, respectively, yielding 11.3% conversion efficiency. With a Cu-free MoO3/Te buffer material, a VOC of 733 mV, a fill factor of 62.3%, and an efficiency of 10.0% efficiency could be achieved.

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