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Initial Stages of Photodegradation of MAPbI3 Perovskite: Accelerated Aging with Concentrated Sunlight

Renjun Guo, Mark V. Khenkin, Georgios E. Arnaoutakis, Nataliya A. Samoylova, Jérémy Barbé, Harrison Ka Hin Lee, Wing Chung Tsoi, Eugene A. Katz, Wing Chung Tsoi Orcid Logo

Solar RRL, Start page: 1900270

Swansea University Author: Wing Chung Tsoi Orcid Logo

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DOI (Published version): 10.1002/solr.201900270

Abstract

The initial stages of photo‐degradation of CH3NH3PbI3 (MAPbI3) thin films prior to any significant change in light absorption are studied in experiments with independent control of sample temperature and intensity of concentrated sunlight from 50 to 500 suns. Photo‐stability of the MAPbI3 film is re...

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Published in: Solar RRL
ISSN: 2367-198X 2367-198X
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa51311
first_indexed 2019-08-09T16:32:00Z
last_indexed 2019-08-09T16:32:00Z
id cronfa51311
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spelling 2019-08-05T09:50:55.4297581 v2 51311 2019-08-05 Initial Stages of Photodegradation of MAPbI3 Perovskite: Accelerated Aging with Concentrated Sunlight 7e5f541df6635a9a8e1a579ff2de5d56 0000-0003-3836-5139 Wing Chung Tsoi Wing Chung Tsoi true false 2019-08-05 EAAS The initial stages of photo‐degradation of CH3NH3PbI3 (MAPbI3) thin films prior to any significant change in light absorption are studied in experiments with independent control of sample temperature and intensity of concentrated sunlight from 50 to 500 suns. Photo‐stability of the MAPbI3 film is revealed to be extremely sensitive to the sample temperature. Under the combined action of light and heat (either by concentrated sunlight or by external heating), a strong reduction of the film photoluminescence (PL) without changes in the perovskite light absorption can be observed during the initial stages of degradation. In contrast, illumination of perovskite films (with intensity up to 500 suns) without heating (using chopped concentrated sunlight) induces considerable PL enhancement while the optical absorption spectrum remains unchanged. With accurate temperature control, aging under concentrated sunlight results in similar instability trends as that under 1 sun. Journal Article Solar RRL 1900270 2367-198X 2367-198X 31 12 2019 2019-12-31 10.1002/solr.201900270 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University 2019-08-05T09:50:55.4297581 2019-08-05T09:40:23.5936753 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Renjun Guo 1 Mark V. Khenkin 2 Georgios E. Arnaoutakis 3 Nataliya A. Samoylova 4 Jérémy Barbé 5 Harrison Ka Hin Lee 6 Wing Chung Tsoi 7 Eugene A. Katz 8 Wing Chung Tsoi 0000-0003-3836-5139 9 0051311-05082019095011.pdf guo2019(2).pdf 2019-08-05T09:50:11.8330000 Output 1039114 application/pdf Accepted Manuscript true 2020-07-04T00:00:00.0000000 false eng
title Initial Stages of Photodegradation of MAPbI3 Perovskite: Accelerated Aging with Concentrated Sunlight
spellingShingle Initial Stages of Photodegradation of MAPbI3 Perovskite: Accelerated Aging with Concentrated Sunlight
Wing Chung Tsoi
title_short Initial Stages of Photodegradation of MAPbI3 Perovskite: Accelerated Aging with Concentrated Sunlight
title_full Initial Stages of Photodegradation of MAPbI3 Perovskite: Accelerated Aging with Concentrated Sunlight
title_fullStr Initial Stages of Photodegradation of MAPbI3 Perovskite: Accelerated Aging with Concentrated Sunlight
title_full_unstemmed Initial Stages of Photodegradation of MAPbI3 Perovskite: Accelerated Aging with Concentrated Sunlight
title_sort Initial Stages of Photodegradation of MAPbI3 Perovskite: Accelerated Aging with Concentrated Sunlight
author_id_str_mv 7e5f541df6635a9a8e1a579ff2de5d56
author_id_fullname_str_mv 7e5f541df6635a9a8e1a579ff2de5d56_***_Wing Chung Tsoi
author Wing Chung Tsoi
author2 Renjun Guo
Mark V. Khenkin
Georgios E. Arnaoutakis
Nataliya A. Samoylova
Jérémy Barbé
Harrison Ka Hin Lee
Wing Chung Tsoi
Eugene A. Katz
Wing Chung Tsoi
format Journal article
container_title Solar RRL
container_start_page 1900270
publishDate 2019
institution Swansea University
issn 2367-198X
2367-198X
doi_str_mv 10.1002/solr.201900270
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 1
active_str 0
description The initial stages of photo‐degradation of CH3NH3PbI3 (MAPbI3) thin films prior to any significant change in light absorption are studied in experiments with independent control of sample temperature and intensity of concentrated sunlight from 50 to 500 suns. Photo‐stability of the MAPbI3 film is revealed to be extremely sensitive to the sample temperature. Under the combined action of light and heat (either by concentrated sunlight or by external heating), a strong reduction of the film photoluminescence (PL) without changes in the perovskite light absorption can be observed during the initial stages of degradation. In contrast, illumination of perovskite films (with intensity up to 500 suns) without heating (using chopped concentrated sunlight) induces considerable PL enhancement while the optical absorption spectrum remains unchanged. With accurate temperature control, aging under concentrated sunlight results in similar instability trends as that under 1 sun.
published_date 2019-12-31T07:46:56Z
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score 11.04748

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