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Progression of metalorganic chemical vapour-deposited CdTe thin-film PV devices towards modules

Giray Kartopu, Laurie J. Phillips, Vincent Barrioz, Stuart Irvine Orcid Logo, Simon D. Hodgson, Eva Tejedor, David Dupin, Andrew Clayton Orcid Logo, Sarah L. Rugen-Hankey, Ken Durose

Progress in Photovoltaics: Research and Applications, Volume: 24, Issue: 3, Pages: 283 - 291

Swansea University Authors: Giray Kartopu, Stuart Irvine Orcid Logo, Andrew Clayton Orcid Logo

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DOI (Published version): 10.1002/pip.2668

Abstract

This paper reports important developments achieved with CdTe thin-film photovoltaic devices produced using metalorganic chemical vapour deposition at atmospheric pressure. In particular, attention was paid to understand the enhancements in solar cell conversion efficiency, to develop the cell design...

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Published in: Progress in Photovoltaics: Research and Applications
ISSN: 1062-7995
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa29563
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spelling 2020-11-25T10:13:36.9315038 v2 29563 2016-08-12 Progression of metalorganic chemical vapour-deposited CdTe thin-film PV devices towards modules 5c4917e0a29801844ec31737672f930c Giray Kartopu Giray Kartopu true false 1ddb966eccef99aa96e87f1ea4917f1f 0000-0002-1652-4496 Stuart Irvine Stuart Irvine true false cdef4ab8032ae2213a97638baac8176f 0000-0002-1540-0440 Andrew Clayton Andrew Clayton true false 2016-08-12 MTLS This paper reports important developments achieved with CdTe thin-film photovoltaic devices produced using metalorganic chemical vapour deposition at atmospheric pressure. In particular, attention was paid to understand the enhancements in solar cell conversion efficiency, to develop the cell design, and assess scalability towards modules. Improvements in the device performance were achieved by optimising the high-transparency window layer (Cd0.3Zn0.7S) and a device-activation anneal. These increased the fill factor and open-circuit voltage to 77 ± 1% and 785 ± 7 mV, respectively, compared with 69 ± 3% and 710 ± 10 mV for previous baseline devices with no anneal and thicker Cd0.3Zn0.7S. The enhancement in these parameters is associated with the two fold to three fold increase in the net acceptor density of CdTe upon air annealing and a decrease in the back contact barrier height from 0.24 ± 0.01 to 0.16 ± 0.02 eV. The optimum thickness of the window layer for maximum photocurrent was 150 nm. The cell size was scaled from 0.25 to 2 cm2 in order to assess its impact on the device series resistance and fill factor. Finally, micro-module devices utilising series-connected 2-cm2 sub-cells were fabricated using a combination of laser and mechanical scribing techniques. An initial module-to-cell efficiency ratio of 0.9 was demonstrated for a six-cell module with the use of the improved device structure and processing. Prospects for CdTe photovoltaic modules grown by metalorganic chemical vapour deposition are commented on. Journal Article Progress in Photovoltaics: Research and Applications 24 3 283 291 1062-7995 MOCVD; CdTe thin-film PV; solar cells; micro-module 1 3 2016 2016-03-01 10.1002/pip.2668 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2020-11-25T10:13:36.9315038 2016-08-12T16:04:21.5930365 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Giray Kartopu 1 Laurie J. Phillips 2 Vincent Barrioz 3 Stuart Irvine 0000-0002-1652-4496 4 Simon D. Hodgson 5 Eva Tejedor 6 David Dupin 7 Andrew Clayton 0000-0002-1540-0440 8 Sarah L. Rugen-Hankey 9 Ken Durose 10
title Progression of metalorganic chemical vapour-deposited CdTe thin-film PV devices towards modules
spellingShingle Progression of metalorganic chemical vapour-deposited CdTe thin-film PV devices towards modules
Giray Kartopu
Stuart Irvine
Andrew Clayton
title_short Progression of metalorganic chemical vapour-deposited CdTe thin-film PV devices towards modules
title_full Progression of metalorganic chemical vapour-deposited CdTe thin-film PV devices towards modules
title_fullStr Progression of metalorganic chemical vapour-deposited CdTe thin-film PV devices towards modules
title_full_unstemmed Progression of metalorganic chemical vapour-deposited CdTe thin-film PV devices towards modules
title_sort Progression of metalorganic chemical vapour-deposited CdTe thin-film PV devices towards modules
author_id_str_mv 5c4917e0a29801844ec31737672f930c
1ddb966eccef99aa96e87f1ea4917f1f
cdef4ab8032ae2213a97638baac8176f
author_id_fullname_str_mv 5c4917e0a29801844ec31737672f930c_***_Giray Kartopu
1ddb966eccef99aa96e87f1ea4917f1f_***_Stuart Irvine
cdef4ab8032ae2213a97638baac8176f_***_Andrew Clayton
author Giray Kartopu
Stuart Irvine
Andrew Clayton
author2 Giray Kartopu
Laurie J. Phillips
Vincent Barrioz
Stuart Irvine
Simon D. Hodgson
Eva Tejedor
David Dupin
Andrew Clayton
Sarah L. Rugen-Hankey
Ken Durose
format Journal article
container_title Progress in Photovoltaics: Research and Applications
container_volume 24
container_issue 3
container_start_page 283
publishDate 2016
institution Swansea University
issn 1062-7995
doi_str_mv 10.1002/pip.2668
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 0
active_str 0
description This paper reports important developments achieved with CdTe thin-film photovoltaic devices produced using metalorganic chemical vapour deposition at atmospheric pressure. In particular, attention was paid to understand the enhancements in solar cell conversion efficiency, to develop the cell design, and assess scalability towards modules. Improvements in the device performance were achieved by optimising the high-transparency window layer (Cd0.3Zn0.7S) and a device-activation anneal. These increased the fill factor and open-circuit voltage to 77 ± 1% and 785 ± 7 mV, respectively, compared with 69 ± 3% and 710 ± 10 mV for previous baseline devices with no anneal and thicker Cd0.3Zn0.7S. The enhancement in these parameters is associated with the two fold to three fold increase in the net acceptor density of CdTe upon air annealing and a decrease in the back contact barrier height from 0.24 ± 0.01 to 0.16 ± 0.02 eV. The optimum thickness of the window layer for maximum photocurrent was 150 nm. The cell size was scaled from 0.25 to 2 cm2 in order to assess its impact on the device series resistance and fill factor. Finally, micro-module devices utilising series-connected 2-cm2 sub-cells were fabricated using a combination of laser and mechanical scribing techniques. An initial module-to-cell efficiency ratio of 0.9 was demonstrated for a six-cell module with the use of the improved device structure and processing. Prospects for CdTe photovoltaic modules grown by metalorganic chemical vapour deposition are commented on.
published_date 2016-03-01T03:35:57Z
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score 11.036706

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