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

Giray Kartopu; Andrew Clayton; William Brooks; Simon Hodgson; Vincent Barrioz; Alban Maertens; Daniel Lamb; Stuart Irvine

doi:10.1002/pip.2272

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

Giray Kartopu, Andrew Clayton, William Brooks, Simon Hodgson, Vincent Barrioz, Alban Maertens, Daniel Lamb, Stuart Irvine

Research output: Contribution to journal › Article › peer-review

78 Citations (Scopus)

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.

Original language	English
Pages (from-to)	18-23
Journal	Progress in Photovoltaics: Research and Applications
Volume	22
Issue number	1
DOIs	https://doi.org/10.1002/pip.2272
Publication status	Published - Jan 2014

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

CdTe thin-film solar sells
window layer composition
blue response

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10.1002/pip.2272

Cite this

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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.",

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T1 - Effect of window layer composition in Cd1−xZnxS/CdTe solar cells

AU - Kartopu, Giray

AU - Clayton, Andrew

AU - Brooks, William

AU - Hodgson, Simon

AU - Barrioz, Vincent

AU - Maertens, Alban

AU - Lamb, Daniel

AU - Irvine, Stuart

PY - 2014/1

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N2 - 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.

AB - 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.

KW - CdTe thin-film solar sells

KW - window layer composition

KW - blue response

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M3 - Article

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

Abstract

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Keywords

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