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Effect of bending test on the performance of CdTe solar cells on flexible ultra-thin glass produced by MOCVD

Ana Teloeken, Dan Lamb Orcid Logo, Tom Dunlop Orcid Logo, Stuart Irvine Orcid Logo

Solar Energy Materials and Solar Cells, Volume: 211, Start page: 110552

Swansea University Authors: Ana Teloeken, Dan Lamb Orcid Logo, Tom Dunlop Orcid Logo, Stuart Irvine Orcid Logo

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DOI (Published version): 10.1016/j.solmat.2020.110552

Abstract

The development of lightweight and flexible solar modules is highly desirable for high specific power applications, building integrated photovoltaics, unmanned aerial vehicles and space. Flexible metallic and polyimide foils are frequently used, but in this work an alternative substrate with attract...

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Published in: Solar Energy Materials and Solar Cells
ISSN: 0927-0248
Published: Elsevier BV 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa53921
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Flexible metallic and polyimide foils are frequently used, but in this work an alternative substrate with attractive properties, ultra-thin glass (UTG) has been employed. CdTe solar cells with average efficiency reaching 14.7% AM1.5G efficiency have been produced on UTG of 100 &#x3BC;m thickness. Little has been reported on the effects on PV performance when flexed, so we investigated the effects on J-V parameters when the measurements were performed in 40 mm and 32 mm bend radius, and in a planar state before and after the bend curvature was applied. The flat J-V measurements after 32 mm bending test showed some improvement in efficiency, Voc and FF, with values higher than the first measurement in a planar state. In addition, two CdTe solar cells with identical initial performance were subjected to 32 mm static bending test for 168 hours, the results showed excellent uniformity and stability and no significant variation on J-V parameters was observed. External quantum efficiency and capacitance voltage measurements were performed and showed no significant change in spectral response or carrier concentration. Residual stress analysis showed that no additional strain was induced within the film after the bending test and that the overall strain was low. 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spelling 2020-10-20T11:48:19.6964949 v2 53921 2020-04-09 Effect of bending test on the performance of CdTe solar cells on flexible ultra-thin glass produced by MOCVD acd0734fdeda1faebdb330574de96abe Ana Teloeken Ana Teloeken true false decd92a653848a357f0c6f8e38e0aea0 0000-0002-4762-4641 Dan Lamb Dan Lamb true false 809395460ab1e6b53a906b136d919c41 0000-0002-5851-8713 Tom Dunlop Tom Dunlop true false 1ddb966eccef99aa96e87f1ea4917f1f 0000-0002-1652-4496 Stuart Irvine Stuart Irvine true false 2020-04-09 FGSEN The development of lightweight and flexible solar modules is highly desirable for high specific power applications, building integrated photovoltaics, unmanned aerial vehicles and space. Flexible metallic and polyimide foils are frequently used, but in this work an alternative substrate with attractive properties, ultra-thin glass (UTG) has been employed. CdTe solar cells with average efficiency reaching 14.7% AM1.5G efficiency have been produced on UTG of 100 μm thickness. Little has been reported on the effects on PV performance when flexed, so we investigated the effects on J-V parameters when the measurements were performed in 40 mm and 32 mm bend radius, and in a planar state before and after the bend curvature was applied. The flat J-V measurements after 32 mm bending test showed some improvement in efficiency, Voc and FF, with values higher than the first measurement in a planar state. In addition, two CdTe solar cells with identical initial performance were subjected to 32 mm static bending test for 168 hours, the results showed excellent uniformity and stability and no significant variation on J-V parameters was observed. External quantum efficiency and capacitance voltage measurements were performed and showed no significant change in spectral response or carrier concentration. Residual stress analysis showed that no additional strain was induced within the film after the bending test and that the overall strain was low. This has demonstrated the feasibility of using CdTe solar cells on UTG in new applications, when a curved module is required without compromising performance. Journal Article Solar Energy Materials and Solar Cells 211 110552 Elsevier BV 0927-0248 Metalorganic chemical vapor deposition; CdTe solar cells; Bending test; Thin films; Ultra-thin glass 1 7 2020 2020-07-01 10.1016/j.solmat.2020.110552 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2020-10-20T11:48:19.6964949 2020-04-09T08:49:17.4676080 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Ana Teloeken 1 Dan Lamb 0000-0002-4762-4641 2 Tom Dunlop 0000-0002-5851-8713 3 Stuart Irvine 0000-0002-1652-4496 4 53921__17088__683967beb0ab46008d81379403702907.pdf 53921VOR.pdf 2020-04-17T16:58:30.9854944 Output 1303589 application/pdf Version of Record true This is an open access article under the terms of a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND). true eng https://creativecommons.org/licenses/by-nc-nd/4.0/
title Effect of bending test on the performance of CdTe solar cells on flexible ultra-thin glass produced by MOCVD
spellingShingle Effect of bending test on the performance of CdTe solar cells on flexible ultra-thin glass produced by MOCVD
Ana Teloeken
Dan Lamb
Tom Dunlop
Stuart Irvine
title_short Effect of bending test on the performance of CdTe solar cells on flexible ultra-thin glass produced by MOCVD
title_full Effect of bending test on the performance of CdTe solar cells on flexible ultra-thin glass produced by MOCVD
title_fullStr Effect of bending test on the performance of CdTe solar cells on flexible ultra-thin glass produced by MOCVD
title_full_unstemmed Effect of bending test on the performance of CdTe solar cells on flexible ultra-thin glass produced by MOCVD
title_sort Effect of bending test on the performance of CdTe solar cells on flexible ultra-thin glass produced by MOCVD
author_id_str_mv acd0734fdeda1faebdb330574de96abe
decd92a653848a357f0c6f8e38e0aea0
809395460ab1e6b53a906b136d919c41
1ddb966eccef99aa96e87f1ea4917f1f
author_id_fullname_str_mv acd0734fdeda1faebdb330574de96abe_***_Ana Teloeken
decd92a653848a357f0c6f8e38e0aea0_***_Dan Lamb
809395460ab1e6b53a906b136d919c41_***_Tom Dunlop
1ddb966eccef99aa96e87f1ea4917f1f_***_Stuart Irvine
author Ana Teloeken
Dan Lamb
Tom Dunlop
Stuart Irvine
author2 Ana Teloeken
Dan Lamb
Tom Dunlop
Stuart Irvine
format Journal article
container_title Solar Energy Materials and Solar Cells
container_volume 211
container_start_page 110552
publishDate 2020
institution Swansea University
issn 0927-0248
doi_str_mv 10.1016/j.solmat.2020.110552
publisher Elsevier BV
college_str Faculty of Science and Engineering
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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 - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
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description The development of lightweight and flexible solar modules is highly desirable for high specific power applications, building integrated photovoltaics, unmanned aerial vehicles and space. Flexible metallic and polyimide foils are frequently used, but in this work an alternative substrate with attractive properties, ultra-thin glass (UTG) has been employed. CdTe solar cells with average efficiency reaching 14.7% AM1.5G efficiency have been produced on UTG of 100 μm thickness. Little has been reported on the effects on PV performance when flexed, so we investigated the effects on J-V parameters when the measurements were performed in 40 mm and 32 mm bend radius, and in a planar state before and after the bend curvature was applied. The flat J-V measurements after 32 mm bending test showed some improvement in efficiency, Voc and FF, with values higher than the first measurement in a planar state. In addition, two CdTe solar cells with identical initial performance were subjected to 32 mm static bending test for 168 hours, the results showed excellent uniformity and stability and no significant variation on J-V parameters was observed. External quantum efficiency and capacitance voltage measurements were performed and showed no significant change in spectral response or carrier concentration. Residual stress analysis showed that no additional strain was induced within the film after the bending test and that the overall strain was low. This has demonstrated the feasibility of using CdTe solar cells on UTG in new applications, when a curved module is required without compromising performance.
published_date 2020-07-01T04:07:09Z
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