Effect of window layer composition in Cd1−xZnxS/CdTe solar cells

Kartopu, Giray, Clayton, Andrew, Brooks, William, Hodgson, Simon, Barrioz, Vincent, Maertens, Alban, Lamb, Daniel and Irvine, Stuart (2014) Effect of window layer composition in Cd1−xZnxS/CdTe solar cells. Progress in Photovoltaics: Research and Applications, 22 (1). pp. 18-23. ISSN 1062 7995

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Official URL: http://dx.doi.org/10.1002/pip.2272

Abstract

To improve CdS/CdTe cell/module efficiencies, CdS window layer thinning is commonly applied despite the risk of increased pin-hole defects and shunting. An alternative approach is to widen the band gap of the window layer (2.42 eV for CdS) via alloying, for example, by forming compositions of Cd1−xZnxS. In this study, the performance of Cd1−xZnxS/CdTe thin-film solar cells has been studied as a function of x (from x = 0 to 0.9), widening the window layer band gap up to and over 3.4 eV. Optimum Cd1−xZnxS compositions were clearly identified to be around x = 0.7, and limitations to the achievable photocurrent and conversion efficiencies have been addressed.

Item Type: Article
Uncontrolled Keywords: CdTe thin-film solar sells; window layer composition; blue response
Subjects: F200 Materials Science
Department: Faculties > Engineering and Environment > Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 23 Nov 2015 15:15
Last Modified: 23 Nov 2015 15:15
URI: http://nrl.northumbria.ac.uk/id/eprint/24690

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