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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 Orcid Logo, Dimitrios Raptis, Trystan Watson Orcid Logo, Matt Carnie Orcid Logo

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

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

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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 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 College of Engineering 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
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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 College of Engineering
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hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}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 2021-05-05T15:30:04Z
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