High Thickness Tolerance in All‐Polymer‐Based Organic Photovoltaics Enables Efficient and Stable In‐Door Operation

Zhang, Lei; Lee, Seonjeong; Park, Song Yi; Sandberg, Oskar J.; Yang, Emily J.; Meredith, Paul; Kim, Yun‐Hi; Kim, Ji‐Seon

doi:10.1002/advs.202408181

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High Thickness Tolerance in All‐Polymer‐Based Organic Photovoltaics Enables Efficient and Stable In‐Door Operation

Lei Zhang

, Seonjeong Lee, Song Yi Park, Oskar J. Sandberg, Emily J. Yang, Paul Meredith

, Yun‐Hi Kim

, Ji‐Seon Kim

Advanced Science, Volume: 11, Issue: 42, Start page: 2408181

Swansea University Author: Paul Meredith

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DOI (Published version): 10.1002/advs.202408181

Abstract

Organic photovoltaics (OPVs) have great potential to drive low‐power consumption electronic devices under indoor light due to their highly tunable optoelectronic properties. Thick devices (>300 nm photo‐active junctions) are desirable to maximize photocurrent and to manufacture large‐scale module...

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Published in:	Advanced Science
ISSN:	2198-3844 2198-3844
Published:	Wiley 2024
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa68599

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However, thick devices usually suffer from severe charge recombination, deteriorating device performances. Herein, the study demonstrates excellent thickness tolerance of all‐polymer‐based PVs for efficient and stable indoor applications. Under indoor light, device performance is less dependent on photoactive layer thickness, exhibiting the best maximum power output in thick devices (34.7 µW cm−2 in 320–475 nm devices). Thick devices also exhibit much better photostability compared with thin devices. Such high thickness tolerance of all‐polymer‐based PV devices under indoor operation is attributed to strongly suppressed space‐charge effects, leading to reduced bimolecular recombination losses in thick devices. The unbalanced charge carrier mobilities are identified as the main cause for significant space‐charge effects, which is confirmed by drift‐diffusion simulations. 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spelling	2025-01-28T16:02:01.8788886 v2 68599 2024-12-18 High Thickness Tolerance in All‐Polymer‐Based Organic Photovoltaics Enables Efficient and Stable In‐Door Operation 31e8fe57fa180d418afd48c3af280c2e 0000-0002-9049-7414 Paul Meredith Paul Meredith true false 2024-12-18 BGPS Organic photovoltaics (OPVs) have great potential to drive low‐power consumption electronic devices under indoor light due to their highly tunable optoelectronic properties. Thick devices (>300 nm photo‐active junctions) are desirable to maximize photocurrent and to manufacture large‐scale modules via solution‐processing. However, thick devices usually suffer from severe charge recombination, deteriorating device performances. Herein, the study demonstrates excellent thickness tolerance of all‐polymer‐based PVs for efficient and stable indoor applications. Under indoor light, device performance is less dependent on photoactive layer thickness, exhibiting the best maximum power output in thick devices (34.7 µW cm−2 in 320–475 nm devices). Thick devices also exhibit much better photostability compared with thin devices. Such high thickness tolerance of all‐polymer‐based PV devices under indoor operation is attributed to strongly suppressed space‐charge effects, leading to reduced bimolecular recombination losses in thick devices. The unbalanced charge carrier mobilities are identified as the main cause for significant space‐charge effects, which is confirmed by drift‐diffusion simulations. This work suggests that all‐polymer‐based PVs, even with unbalanced mobilities, are highly desirable for thick, efficient, and stable devices for indoor applications. Journal Article Advanced Science 11 42 2408181 Wiley 2198-3844 2198-3844 Indoor photovoltaics, organic solar cells, polymer/polymer blends, space-charge eﬀect, thickness tolerance 13 11 2024 2024-11-13 10.1002/advs.202408181 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University Another institution paid the OA fee This research was supported by LAMP Program of the National Research Foundation of Korea (NRF) grant funded by the Ministry of Education (RS-2023-00301974). The work at Swansea University was funded through the Welsh Government's Sêr Cymru II Program “Sustainable Advanced Materials” (Welsh European Funding Office − European Regional Development Fund) and UKRI Research England RPIF Program (Centre for Integrative Semiconductor Materials). P.M. is a Sêr Cymru II Research Chair also funded through the Welsh Government's Sêr Cymru II “Sustainable Advanced Materials” Program (European Regional Development Fund, Welsh European Funding Office and Swansea University Strategic Initiative). This work was also funded by the UKRI through the EPSRC Grant EP/T028513/1 Application Targeted and Integrated Photovoltaics. O.J.S. acknowledges funding from the Research Council of Finland through project #357196. 2025-01-28T16:02:01.8788886 2024-12-18T14:19:51.0812461 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Lei Zhang 0009-0005-7024-2691 1 Seonjeong Lee 2 Song Yi Park 3 Oskar J. Sandberg 4 Emily J. Yang 5 Paul Meredith 0000-0002-9049-7414 6 Yun‐Hi Kim 0000-0001-8856-4414 7 Ji‐Seon Kim 0000-0003-4715-3656 8 68599__33176__e9b4625a858c400dba41fc4e3b7720ad.pdf 68599.VOR.pdf 2024-12-18T15:49:15.0061848 Output 2582002 application/pdf Version of Record true © 2024 The Author(s). This is an open access article under the terms of the Creative Commons Attribution License (CC-BY 4.0). true eng http://creativecommons.org/licenses/by/4.0/
title	High Thickness Tolerance in All‐Polymer‐Based Organic Photovoltaics Enables Efficient and Stable In‐Door Operation
spellingShingle	High Thickness Tolerance in All‐Polymer‐Based Organic Photovoltaics Enables Efficient and Stable In‐Door Operation Paul Meredith
title_short	High Thickness Tolerance in All‐Polymer‐Based Organic Photovoltaics Enables Efficient and Stable In‐Door Operation
title_full	High Thickness Tolerance in All‐Polymer‐Based Organic Photovoltaics Enables Efficient and Stable In‐Door Operation
title_fullStr	High Thickness Tolerance in All‐Polymer‐Based Organic Photovoltaics Enables Efficient and Stable In‐Door Operation
title_full_unstemmed	High Thickness Tolerance in All‐Polymer‐Based Organic Photovoltaics Enables Efficient and Stable In‐Door Operation
title_sort	High Thickness Tolerance in All‐Polymer‐Based Organic Photovoltaics Enables Efficient and Stable In‐Door Operation
author_id_str_mv	31e8fe57fa180d418afd48c3af280c2e
author_id_fullname_str_mv	31e8fe57fa180d418afd48c3af280c2e_***_Paul Meredith
author	Paul Meredith
author2	Lei Zhang Seonjeong Lee Song Yi Park Oskar J. Sandberg Emily J. Yang Paul Meredith Yun‐Hi Kim Ji‐Seon Kim
format	Journal article
container_title	Advanced Science
container_volume	11
container_issue	42
container_start_page	2408181
publishDate	2024
institution	Swansea University
issn	2198-3844 2198-3844
doi_str_mv	10.1002/advs.202408181
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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department_str	School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
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description	Organic photovoltaics (OPVs) have great potential to drive low‐power consumption electronic devices under indoor light due to their highly tunable optoelectronic properties. Thick devices (>300 nm photo‐active junctions) are desirable to maximize photocurrent and to manufacture large‐scale modules via solution‐processing. However, thick devices usually suffer from severe charge recombination, deteriorating device performances. Herein, the study demonstrates excellent thickness tolerance of all‐polymer‐based PVs for efficient and stable indoor applications. Under indoor light, device performance is less dependent on photoactive layer thickness, exhibiting the best maximum power output in thick devices (34.7 µW cm−2 in 320–475 nm devices). Thick devices also exhibit much better photostability compared with thin devices. Such high thickness tolerance of all‐polymer‐based PV devices under indoor operation is attributed to strongly suppressed space‐charge effects, leading to reduced bimolecular recombination losses in thick devices. The unbalanced charge carrier mobilities are identified as the main cause for significant space‐charge effects, which is confirmed by drift‐diffusion simulations. This work suggests that all‐polymer‐based PVs, even with unbalanced mobilities, are highly desirable for thick, efficient, and stable devices for indoor applications.
published_date	2024-11-13T05:20:08Z
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score	11.090445

High Thickness Tolerance in All‐Polymer‐Based Organic Photovoltaics Enables Efficient and Stable In‐Door Operation

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