Journal article 1470 views 211 downloads
Ionic Influences on Recombination in Perovskite Solar Cells
ACS Energy Letters, Volume: 2, Issue: 7, Pages: 1683 - 1689
Swansea University Authors:
Adam Pockett, Matt Carnie
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DOI (Published version): 10.1021/acsenergylett.7b00490
Abstract
The origins of recombination processes, particularly those that relate to IV hysteresis, are still unclear in perovskite solar cells. Of particular interest, is the impact different contact materials have on the level of hysteresis observed. This work shows that there is a clear link between ionic m...
Published in: | ACS Energy Letters |
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ISSN: | 2380-8195 2380-8195 |
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2017
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URI: | https://cronfa.swan.ac.uk/Record/cronfa34445 |
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2021-01-14T13:06:26.2718480 v2 34445 2017-06-23 Ionic Influences on Recombination in Perovskite Solar Cells de06433fccc0514dcf45aa9d1fc5c60f Adam Pockett Adam Pockett true false 73b367694366a646b90bb15db32bb8c0 0000-0002-4232-1967 Matt Carnie Matt Carnie true false 2017-06-23 FGSEN The origins of recombination processes, particularly those that relate to IV hysteresis, are still unclear in perovskite solar cells. Of particular interest, is the impact different contact materials have on the level of hysteresis observed. This work shows that there is a clear link between ionic movement and interfacial recombination, which have both been shown to be responsible for hysteresis. By performing low temperature transient photovoltage (TPV) measurements over a period in which ions redistribute within the perovskite layer, the dominant recombination mechanism, responsible for hysteresis and other slow dynamic processes, is found to occur at the TiO2/perovskite interface. We observe an anomalous negative transient upon firing the laser pulse which we attribute to interfacial recombination at the TiO2/perovskite interface. The impact of recombination at the perovskite/HTL interface is shown to be negligible by performing TPV measurements using different laser wavelengths to probe different depths into the perovskite layer, as well as by changing the type of HTL used. Journal Article ACS Energy Letters 2 7 1683 1689 2380-8195 2380-8195 14 7 2017 2017-07-14 10.1021/acsenergylett.7b00490 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University RCUK, EP/N020863/1 2021-01-14T13:06:26.2718480 2017-06-23T10:33:35.3290247 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Adam Pockett 1 Matt Carnie 0000-0002-4232-1967 2 0034445-03072017095439.pdf acsenergylett.7b00490.pdf 2017-07-03T09:54:39.9170000 Output 1253262 application/pdf Version of Record true Released under the terms of a Creative Commons Attribution (CC-BY) License. true eng http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html |
title |
Ionic Influences on Recombination in Perovskite Solar Cells |
spellingShingle |
Ionic Influences on Recombination in Perovskite Solar Cells Adam Pockett Matt Carnie |
title_short |
Ionic Influences on Recombination in Perovskite Solar Cells |
title_full |
Ionic Influences on Recombination in Perovskite Solar Cells |
title_fullStr |
Ionic Influences on Recombination in Perovskite Solar Cells |
title_full_unstemmed |
Ionic Influences on Recombination in Perovskite Solar Cells |
title_sort |
Ionic Influences on Recombination in Perovskite Solar Cells |
author_id_str_mv |
de06433fccc0514dcf45aa9d1fc5c60f 73b367694366a646b90bb15db32bb8c0 |
author_id_fullname_str_mv |
de06433fccc0514dcf45aa9d1fc5c60f_***_Adam Pockett 73b367694366a646b90bb15db32bb8c0_***_Matt Carnie |
author |
Adam Pockett Matt Carnie |
author2 |
Adam Pockett Matt Carnie |
format |
Journal article |
container_title |
ACS Energy Letters |
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2 |
container_issue |
7 |
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1683 |
publishDate |
2017 |
institution |
Swansea University |
issn |
2380-8195 2380-8195 |
doi_str_mv |
10.1021/acsenergylett.7b00490 |
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Faculty of Science and Engineering |
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facultyofscienceandengineering |
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Faculty of Science and Engineering |
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facultyofscienceandengineering |
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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 |
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description |
The origins of recombination processes, particularly those that relate to IV hysteresis, are still unclear in perovskite solar cells. Of particular interest, is the impact different contact materials have on the level of hysteresis observed. This work shows that there is a clear link between ionic movement and interfacial recombination, which have both been shown to be responsible for hysteresis. By performing low temperature transient photovoltage (TPV) measurements over a period in which ions redistribute within the perovskite layer, the dominant recombination mechanism, responsible for hysteresis and other slow dynamic processes, is found to occur at the TiO2/perovskite interface. We observe an anomalous negative transient upon firing the laser pulse which we attribute to interfacial recombination at the TiO2/perovskite interface. The impact of recombination at the perovskite/HTL interface is shown to be negligible by performing TPV measurements using different laser wavelengths to probe different depths into the perovskite layer, as well as by changing the type of HTL used. |
published_date |
2017-07-14T03:42:44Z |
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1763751980483739648 |
score |
11.024221 |