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Effects of Cd1-xZnxS alloy composition and post-deposition air anneal on ultra-thin CdTe solar cells produced by MOCVD

Andrew Claypole, Stuart Irvine Orcid Logo, Andrew Clayton Orcid Logo

Materials Chemistry and Physics

Swansea University Authors: Andrew Claypole , Stuart Irvine Orcid Logo, Andrew Clayton Orcid Logo

Abstract

Ultra-thin CdTe:As/Cd1-xZnxS photovoltaic solar cells with an absorber thickness of 0.5 μm were deposited by metal-organic chemical vapour deposition on indium tin oxide coated boro-aluminosilicate substrates. The Zn precursor concentration was varied to compensate for Zn leaching effects after CdCl...

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Published in: Materials Chemistry and Physics
ISSN: 0254-0584
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URI: https://cronfa.swan.ac.uk/Record/cronfa31732
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spelling 2017-01-25T09:17:26.5251392 v2 31732 2017-01-24 Effects of Cd1-xZnxS alloy composition and post-deposition air anneal on ultra-thin CdTe solar cells produced by MOCVD f67f965e32151fcd26f52f9db57d7baa Andrew Claypole Andrew Claypole true false 1ddb966eccef99aa96e87f1ea4917f1f 0000-0002-1652-4496 Stuart Irvine Stuart Irvine true false cdef4ab8032ae2213a97638baac8176f 0000-0002-1540-0440 Andrew Clayton Andrew Clayton true false 2017-01-24 MECH Ultra-thin CdTe:As/Cd1-xZnxS photovoltaic solar cells with an absorber thickness of 0.5 μm were deposited by metal-organic chemical vapour deposition on indium tin oxide coated boro-aluminosilicate substrates. The Zn precursor concentration was varied to compensate for Zn leaching effects after CdCl2 activation treatment. Analysis of the solar cell composition and structure by X-ray photoelectron spectroscopy depth profiling and X-ray diffraction showed that higher concentrations of Zn in the Cd1-xZnxS window layer resulted in suppression of S diffusion across the CdTe/Cd1-xZnxS interface after CdCl2 activation treatment. Excessive Zn content in the Cd1-xZnxS alloy preserved the spectral response in the blue region of the solar spectrum, but increased series resistance for the solar cells. A modest increase in the Zn content of the Cd1-xZnxS alloy together with a post-deposition air anneal resulted in an improved blue response and an enhanced open circuit voltage and fill factor. This device yielded a mean efficiency of 8.3% over 8 cells (0.25 cm2 cell area) and best cell efficiency of 8.8%. Journal Article Materials Chemistry and Physics 0254-0584 0 0 0 0001-01-01 10.1016/j.matchemphys.2017.01.067 COLLEGE NANME Mechanical Engineering COLLEGE CODE MECH Swansea University 2017-01-25T09:17:26.5251392 2017-01-24T12:11:01.9508974 College of Engineering Engineering Andrew Claypole 1 Stuart Irvine 0000-0002-1652-4496 2 Andrew Clayton 0000-0002-1540-0440 3 0031732-25012017091704.pdf clayton2017(2).pdf 2017-01-25T09:17:04.5300000 Output 1258912 application/pdf Accepted Manuscript true 2018-01-25T00:00:00.0000000 false
title Effects of Cd1-xZnxS alloy composition and post-deposition air anneal on ultra-thin CdTe solar cells produced by MOCVD
spellingShingle Effects of Cd1-xZnxS alloy composition and post-deposition air anneal on ultra-thin CdTe solar cells produced by MOCVD
Andrew, Claypole
Stuart, Irvine
Andrew, Clayton
title_short Effects of Cd1-xZnxS alloy composition and post-deposition air anneal on ultra-thin CdTe solar cells produced by MOCVD
title_full Effects of Cd1-xZnxS alloy composition and post-deposition air anneal on ultra-thin CdTe solar cells produced by MOCVD
title_fullStr Effects of Cd1-xZnxS alloy composition and post-deposition air anneal on ultra-thin CdTe solar cells produced by MOCVD
title_full_unstemmed Effects of Cd1-xZnxS alloy composition and post-deposition air anneal on ultra-thin CdTe solar cells produced by MOCVD
title_sort Effects of Cd1-xZnxS alloy composition and post-deposition air anneal on ultra-thin CdTe solar cells produced by MOCVD
author_id_str_mv f67f965e32151fcd26f52f9db57d7baa
1ddb966eccef99aa96e87f1ea4917f1f
cdef4ab8032ae2213a97638baac8176f
author_id_fullname_str_mv f67f965e32151fcd26f52f9db57d7baa_***_Andrew, Claypole_***_
1ddb966eccef99aa96e87f1ea4917f1f_***_Stuart, Irvine_***_0000-0002-1652-4496
cdef4ab8032ae2213a97638baac8176f_***_Andrew, Clayton_***_0000-0002-1540-0440
author Andrew, Claypole
Stuart, Irvine
Andrew, Clayton
author2 Andrew Claypole
Stuart Irvine
Andrew Clayton
format Journal article
container_title Materials Chemistry and Physics
institution Swansea University
issn 0254-0584
doi_str_mv 10.1016/j.matchemphys.2017.01.067
college_str College of Engineering
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hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
document_store_str 1
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description Ultra-thin CdTe:As/Cd1-xZnxS photovoltaic solar cells with an absorber thickness of 0.5 μm were deposited by metal-organic chemical vapour deposition on indium tin oxide coated boro-aluminosilicate substrates. The Zn precursor concentration was varied to compensate for Zn leaching effects after CdCl2 activation treatment. Analysis of the solar cell composition and structure by X-ray photoelectron spectroscopy depth profiling and X-ray diffraction showed that higher concentrations of Zn in the Cd1-xZnxS window layer resulted in suppression of S diffusion across the CdTe/Cd1-xZnxS interface after CdCl2 activation treatment. Excessive Zn content in the Cd1-xZnxS alloy preserved the spectral response in the blue region of the solar spectrum, but increased series resistance for the solar cells. A modest increase in the Zn content of the Cd1-xZnxS alloy together with a post-deposition air anneal resulted in an improved blue response and an enhanced open circuit voltage and fill factor. This device yielded a mean efficiency of 8.3% over 8 cells (0.25 cm2 cell area) and best cell efficiency of 8.8%.
published_date 0001-01-01T03:53:06Z
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