No Cover Image

Journal article 40 views 6 downloads

Inverted J–V Hysteresis in Perovskite Solar Cells: Insights from Photovoltaic Quantum Efficiency

Miguel Torre Cachafeiro Orcid Logo, Carys Worsley, Fuxiang Ji, Trystan Watson Orcid Logo, Wolfgang Tress Orcid Logo

ACS Energy Letters, Volume: 11, Issue: 2, Pages: 2173 - 2178

Swansea University Authors: Carys Worsley, Trystan Watson Orcid Logo

  • 71486.VoR.pdf

    PDF | Version of Record

    Copyright © 2026 The Authors. This publication is licensed under CC-BY 4.0 license.

    Download (2.59MB)

Check full text

DOI (Published version): 10.1021/acsenergylett.5c04035

Abstract

The most typical hysteresis in the current density–voltage (J–V) curve of perovskite solar cells (PSCs) shows better performance in the backward (BW) than in the forward (FW) voltage scan (normal hysteresis). The opposite, where the FW scan yields higher photocurrent, is known as inverted hysteresis...

Full description

Published in: ACS Energy Letters
ISSN: 2380-8195 2380-8195
Published: American Chemical Society (ACS) 2026
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa71486
first_indexed 2026-02-23T15:21:53Z
last_indexed 2026-02-24T05:33:35Z
id cronfa71486
recordtype SURis
fullrecord <?xml version="1.0"?><rfc1807><datestamp>2026-02-23T15:28:53.3615616</datestamp><bib-version>v2</bib-version><id>71486</id><entry>2026-02-23</entry><title>Inverted J&#x2013;V Hysteresis in Perovskite Solar Cells: Insights from Photovoltaic Quantum Efficiency</title><swanseaauthors><author><sid>e74e27838a54d9df1fe7c5ee2cb8a126</sid><firstname>Carys</firstname><surname>Worsley</surname><name>Carys Worsley</name><active>true</active><ethesisStudent>false</ethesisStudent></author><author><sid>a210327b52472cfe8df9b8108d661457</sid><ORCID>0000-0002-8015-1436</ORCID><firstname>Trystan</firstname><surname>Watson</surname><name>Trystan Watson</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2026-02-23</date><deptcode>EAAS</deptcode><abstract>The most typical hysteresis in the current density&#x2013;voltage (J&#x2013;V) curve of perovskite solar cells (PSCs) shows better performance in the backward (BW) than in the forward (FW) voltage scan (normal hysteresis). The opposite, where the FW scan yields higher photocurrent, is known as inverted hysteresis and is also frequently observed. Here, we examine PSCs exhibiting both normal and inverted hysteresis, depending on scan rate and preconditioning. Spectral changes in the external quantum efficiency (EQE) linked to ionic redistribution reveal that inverted hysteresis arises from blue-range photocurrent losses caused by enhanced recombination at the interfaces due to ionic accumulation. This trend is consistent across PSC architectures, as demonstrated for triple mesoscopic carbon-based (C-PSCs) and planar p-i-n devices. Combined with drift-diffusion simulations, the results show that ionic losses can be bidirectional, and the hysteresis direction depends on how the ionic distribution impacts charge collection efficiency.</abstract><type>Journal Article</type><journal>ACS Energy Letters</journal><volume>11</volume><journalNumber>2</journalNumber><paginationStart>2173</paginationStart><paginationEnd>2178</paginationEnd><publisher>American Chemical Society (ACS)</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>2380-8195</issnPrint><issnElectronic>2380-8195</issnElectronic><keywords/><publishedDay>13</publishedDay><publishedMonth>2</publishedMonth><publishedYear>2026</publishedYear><publishedDate>2026-02-13</publishedDate><doi>10.1021/acsenergylett.5c04035</doi><url/><notes>Letter</notes><college>COLLEGE NANME</college><department>Engineering and Applied Sciences School</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>EAAS</DepartmentCode><institution>Swansea University</institution><apcterm>Another institution paid the OA fee</apcterm><funders>This research received funding from the European Union&#x2019;s Horizon 2020 program under grant agreement no. 851676 (ERC StGrt).</funders><projectreference/><lastEdited>2026-02-23T15:28:53.3615616</lastEdited><Created>2026-02-23T15:19:05.8303135</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Engineering and Applied Sciences - Materials Science and Engineering</level></path><authors><author><firstname>Miguel Torre</firstname><surname>Cachafeiro</surname><orcid>0009-0004-6907-9826</orcid><order>1</order></author><author><firstname>Carys</firstname><surname>Worsley</surname><order>2</order></author><author><firstname>Fuxiang</firstname><surname>Ji</surname><order>3</order></author><author><firstname>Trystan</firstname><surname>Watson</surname><orcid>0000-0002-8015-1436</orcid><order>4</order></author><author><firstname>Wolfgang</firstname><surname>Tress</surname><orcid>0000-0002-4010-239x</orcid><order>5</order></author></authors><documents><document><filename>71486__36287__249b50e545be454b83760b27baeca6a1.pdf</filename><originalFilename>71486.VoR.pdf</originalFilename><uploaded>2026-02-23T15:22:18.6787488</uploaded><type>Output</type><contentLength>2711639</contentLength><contentType>application/pdf</contentType><version>Version of Record</version><cronfaStatus>true</cronfaStatus><documentNotes>Copyright &#xA9; 2026 The Authors. This publication is licensed under CC-BY 4.0 license.</documentNotes><copyrightCorrect>true</copyrightCorrect><language>Eng</language><licence>https://creativecommons.org/licenses/by/4.0/</licence></document></documents><OutputDurs/></rfc1807>
spelling 2026-02-23T15:28:53.3615616 v2 71486 2026-02-23 Inverted J–V Hysteresis in Perovskite Solar Cells: Insights from Photovoltaic Quantum Efficiency e74e27838a54d9df1fe7c5ee2cb8a126 Carys Worsley Carys Worsley true false a210327b52472cfe8df9b8108d661457 0000-0002-8015-1436 Trystan Watson Trystan Watson true false 2026-02-23 EAAS The most typical hysteresis in the current density–voltage (J–V) curve of perovskite solar cells (PSCs) shows better performance in the backward (BW) than in the forward (FW) voltage scan (normal hysteresis). The opposite, where the FW scan yields higher photocurrent, is known as inverted hysteresis and is also frequently observed. Here, we examine PSCs exhibiting both normal and inverted hysteresis, depending on scan rate and preconditioning. Spectral changes in the external quantum efficiency (EQE) linked to ionic redistribution reveal that inverted hysteresis arises from blue-range photocurrent losses caused by enhanced recombination at the interfaces due to ionic accumulation. This trend is consistent across PSC architectures, as demonstrated for triple mesoscopic carbon-based (C-PSCs) and planar p-i-n devices. Combined with drift-diffusion simulations, the results show that ionic losses can be bidirectional, and the hysteresis direction depends on how the ionic distribution impacts charge collection efficiency. Journal Article ACS Energy Letters 11 2 2173 2178 American Chemical Society (ACS) 2380-8195 2380-8195 13 2 2026 2026-02-13 10.1021/acsenergylett.5c04035 Letter COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University Another institution paid the OA fee This research received funding from the European Union’s Horizon 2020 program under grant agreement no. 851676 (ERC StGrt). 2026-02-23T15:28:53.3615616 2026-02-23T15:19:05.8303135 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Miguel Torre Cachafeiro 0009-0004-6907-9826 1 Carys Worsley 2 Fuxiang Ji 3 Trystan Watson 0000-0002-8015-1436 4 Wolfgang Tress 0000-0002-4010-239x 5 71486__36287__249b50e545be454b83760b27baeca6a1.pdf 71486.VoR.pdf 2026-02-23T15:22:18.6787488 Output 2711639 application/pdf Version of Record true Copyright © 2026 The Authors. This publication is licensed under CC-BY 4.0 license. true Eng https://creativecommons.org/licenses/by/4.0/
title Inverted J–V Hysteresis in Perovskite Solar Cells: Insights from Photovoltaic Quantum Efficiency
spellingShingle Inverted J–V Hysteresis in Perovskite Solar Cells: Insights from Photovoltaic Quantum Efficiency
Carys Worsley
Trystan Watson
title_short Inverted J–V Hysteresis in Perovskite Solar Cells: Insights from Photovoltaic Quantum Efficiency
title_full Inverted J–V Hysteresis in Perovskite Solar Cells: Insights from Photovoltaic Quantum Efficiency
title_fullStr Inverted J–V Hysteresis in Perovskite Solar Cells: Insights from Photovoltaic Quantum Efficiency
title_full_unstemmed Inverted J–V Hysteresis in Perovskite Solar Cells: Insights from Photovoltaic Quantum Efficiency
title_sort Inverted J–V Hysteresis in Perovskite Solar Cells: Insights from Photovoltaic Quantum Efficiency
author_id_str_mv e74e27838a54d9df1fe7c5ee2cb8a126
a210327b52472cfe8df9b8108d661457
author_id_fullname_str_mv e74e27838a54d9df1fe7c5ee2cb8a126_***_Carys Worsley
a210327b52472cfe8df9b8108d661457_***_Trystan Watson
author Carys Worsley
Trystan Watson
author2 Miguel Torre Cachafeiro
Carys Worsley
Fuxiang Ji
Trystan Watson
Wolfgang Tress
format Journal article
container_title ACS Energy Letters
container_volume 11
container_issue 2
container_start_page 2173
publishDate 2026
institution Swansea University
issn 2380-8195
2380-8195
doi_str_mv 10.1021/acsenergylett.5c04035
publisher American Chemical Society (ACS)
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 most typical hysteresis in the current density–voltage (J–V) curve of perovskite solar cells (PSCs) shows better performance in the backward (BW) than in the forward (FW) voltage scan (normal hysteresis). The opposite, where the FW scan yields higher photocurrent, is known as inverted hysteresis and is also frequently observed. Here, we examine PSCs exhibiting both normal and inverted hysteresis, depending on scan rate and preconditioning. Spectral changes in the external quantum efficiency (EQE) linked to ionic redistribution reveal that inverted hysteresis arises from blue-range photocurrent losses caused by enhanced recombination at the interfaces due to ionic accumulation. This trend is consistent across PSC architectures, as demonstrated for triple mesoscopic carbon-based (C-PSCs) and planar p-i-n devices. Combined with drift-diffusion simulations, the results show that ionic losses can be bidirectional, and the hysteresis direction depends on how the ionic distribution impacts charge collection efficiency.
published_date 2026-02-13T05:29:52Z
_version_ 1858617520160768000
score 11.097923

Similar Items