Beyond the First Quadrant: Origin of the High Frequency Intensity‐Modulated Photocurrent/Photovoltage Spectroscopy Response of Perovskite Solar Cells

Pockett, Adam; Spence, Michael; Thomas, Suzanne; Raptis, Dimitrios; Watson, Trystan; Carnie, Matt

doi:10.1002/solr.202100159

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Beyond the First Quadrant: Origin of the High Frequency Intensity‐Modulated Photocurrent/Photovoltage Spectroscopy Response of Perovskite Solar Cells

Adam Pockett, Michael Spence, Suzanne Thomas

, Dimitrios Raptis, Trystan Watson

, Matt Carnie

Solar RRL, Volume: 5, Issue: 5, Start page: 2100159

Swansea University Authors: Adam Pockett, Michael Spence, Suzanne Thomas , Dimitrios Raptis, Trystan Watson , Matt Carnie

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DOI (Published version): 10.1002/solr.202100159

Abstract

The complete interpretation of small perturbation frequency‐domain measurements on perovskite solar cells has proven to be challenging. This is particularly true in the case of intensity‐modulated photocurrent/photovoltage spectroscopy (IMPS/IMVS) measurements in which the high frequency response is...

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Published in:	Solar RRL
ISSN:	2367-198X 2367-198X
Published:	Wiley 2021
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URI:	https://cronfa.swan.ac.uk/Record/cronfa56713
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spelling	2022-11-24T15:30:06.2979345 v2 56713 2021-04-21 Beyond the First Quadrant: Origin of the High Frequency Intensity‐Modulated Photocurrent/Photovoltage Spectroscopy Response of Perovskite Solar Cells de06433fccc0514dcf45aa9d1fc5c60f Adam Pockett Adam Pockett true false 801454eb7d42eeb5165b73fb362381ee Michael Spence Michael Spence true false 674e6b012f2118ade7bd8a2fc288595f 0000-0003-0342-3298 Suzanne Thomas Suzanne Thomas true false 75c81a7d972e97c42200ab0ebfa21908 Dimitrios Raptis Dimitrios Raptis true false a210327b52472cfe8df9b8108d661457 0000-0002-8015-1436 Trystan Watson Trystan Watson true false 73b367694366a646b90bb15db32bb8c0 0000-0002-4232-1967 Matt Carnie Matt Carnie true false 2021-04-21 FGSEN The complete interpretation of small perturbation frequency‐domain measurements on perovskite solar cells has proven to be challenging. This is particularly true in the case of intensity‐modulated photocurrent/photovoltage spectroscopy (IMPS/IMVS) measurements in which the high frequency response is obscured by instrument limitations. Herein, a new experimental methodology capable of accurately resolving the high frequency response—often observable in the second and third quadrants of the complex plane—of a range of perovskite devices is demonstrated. By combining single‐frequency IMPS/IMVS measurements, it is able to construct the time dependence of the IMPS/IMVS response of these devices during their initial response to illumination. This reveals significant negative photocurrent/photovoltage signals at high frequency while devices reach steady state, which is in keeping with observations made from comparable time‐domain transient measurements. These techniques allow the underlying interfacial recombination and ion migration processes to be assessed, which are not always evident using steady‐state measurements. The ability to study and mitigate these processes is vital in optimizing the real‐world operation of devices. Journal Article Solar RRL 5 5 2100159 Wiley 2367-198X 2367-198X intensity modulated photocurrent spectroscopy; ion migration; perovskite solar cells; recombination 5 5 2021 2021-05-05 10.1002/solr.202100159 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University SU Library paid the OA fee (TA Institutional Deal) Welsh European Funding Office (SPARC II), EPSRC (EP/N020863/1, EP/R032750/1, EP/T028513/1), and the UKRI Global Challenge Research Fund project SUNRISE (EP/P032591/1) Welsh European Funding Office (SPARC II), EPSRC (EP/N020863/1, EP/R032750/1, EP/T028513/1), and the UKRI Global Challenge Research Fund project SUNRISE (EP/P032591/1) 2022-11-24T15:30:06.2979345 2021-04-21T08:43:44.5543803 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Adam Pockett 1 Michael Spence 2 Suzanne Thomas 0000-0003-0342-3298 3 Dimitrios Raptis 4 Trystan Watson 0000-0002-8015-1436 5 Matt Carnie 0000-0002-4232-1967 6 56713__19721__6ad90b70d9044060a8a0912546c535c5.pdf 56713.pdf 2021-04-21T08:46:11.6085563 Output 935849 application/pdf Version of Record true © 2021 The Authors. This is an open access article under the terms of the Creative Commons Attribution License true eng http://creativecommons.org/licenses/by/4.0/
title	Beyond the First Quadrant: Origin of the High Frequency Intensity‐Modulated Photocurrent/Photovoltage Spectroscopy Response of Perovskite Solar Cells
spellingShingle	Beyond the First Quadrant: Origin of the High Frequency Intensity‐Modulated Photocurrent/Photovoltage Spectroscopy Response of Perovskite Solar Cells Adam Pockett Michael Spence Suzanne Thomas Dimitrios Raptis Trystan Watson Matt Carnie
title_short	Beyond the First Quadrant: Origin of the High Frequency Intensity‐Modulated Photocurrent/Photovoltage Spectroscopy Response of Perovskite Solar Cells
title_full	Beyond the First Quadrant: Origin of the High Frequency Intensity‐Modulated Photocurrent/Photovoltage Spectroscopy Response of Perovskite Solar Cells
title_fullStr	Beyond the First Quadrant: Origin of the High Frequency Intensity‐Modulated Photocurrent/Photovoltage Spectroscopy Response of Perovskite Solar Cells
title_full_unstemmed	Beyond the First Quadrant: Origin of the High Frequency Intensity‐Modulated Photocurrent/Photovoltage Spectroscopy Response of Perovskite Solar Cells
title_sort	Beyond the First Quadrant: Origin of the High Frequency Intensity‐Modulated Photocurrent/Photovoltage Spectroscopy Response of Perovskite Solar Cells
author_id_str_mv	de06433fccc0514dcf45aa9d1fc5c60f 801454eb7d42eeb5165b73fb362381ee 674e6b012f2118ade7bd8a2fc288595f 75c81a7d972e97c42200ab0ebfa21908 a210327b52472cfe8df9b8108d661457 73b367694366a646b90bb15db32bb8c0
author_id_fullname_str_mv	de06433fccc0514dcf45aa9d1fc5c60f_*_Adam Pockett 801454eb7d42eeb5165b73fb362381ee__Michael Spence 674e6b012f2118ade7bd8a2fc288595f__Suzanne Thomas 75c81a7d972e97c42200ab0ebfa21908__Dimitrios Raptis a210327b52472cfe8df9b8108d661457__Trystan Watson 73b367694366a646b90bb15db32bb8c0_*_Matt Carnie
author	Adam Pockett Michael Spence Suzanne Thomas Dimitrios Raptis Trystan Watson Matt Carnie
author2	Adam Pockett Michael Spence Suzanne Thomas Dimitrios Raptis Trystan Watson Matt Carnie
format	Journal article
container_title	Solar RRL
container_volume	5
container_issue	5
container_start_page	2100159
publishDate	2021
institution	Swansea University
issn	2367-198X 2367-198X
doi_str_mv	10.1002/solr.202100159
publisher	Wiley
college_str	Faculty of Science and Engineering
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hierarchy_top_title	Faculty of Science and Engineering
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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
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description	The complete interpretation of small perturbation frequency‐domain measurements on perovskite solar cells has proven to be challenging. This is particularly true in the case of intensity‐modulated photocurrent/photovoltage spectroscopy (IMPS/IMVS) measurements in which the high frequency response is obscured by instrument limitations. Herein, a new experimental methodology capable of accurately resolving the high frequency response—often observable in the second and third quadrants of the complex plane—of a range of perovskite devices is demonstrated. By combining single‐frequency IMPS/IMVS measurements, it is able to construct the time dependence of the IMPS/IMVS response of these devices during their initial response to illumination. This reveals significant negative photocurrent/photovoltage signals at high frequency while devices reach steady state, which is in keeping with observations made from comparable time‐domain transient measurements. These techniques allow the underlying interfacial recombination and ion migration processes to be assessed, which are not always evident using steady‐state measurements. The ability to study and mitigate these processes is vital in optimizing the real‐world operation of devices.
published_date	2021-05-05T04:11:52Z
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score	11.036378

Beyond the First Quadrant: Origin of the High Frequency Intensity‐Modulated Photocurrent/Photovoltage Spectroscopy Response of Perovskite Solar Cells

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