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A Rhodanine Flanked Nonfullerene Acceptor for Solution-Processed Organic Photovoltaics

Sarah Holliday, Raja Shahid Ashraf, Christian B. Nielsen, Mindaugas Kirkus, Jason A. Röhr, Ching-Hong Tan, Elisa Collado-Fregoso, Astrid-Caroline Knall, James Durrant Orcid Logo, Jenny Nelson, Iain McCulloch

Journal of the American Chemical Society, Volume: 137, Issue: 2, Pages: 898 - 904

Swansea University Author: James Durrant Orcid Logo

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DOI (Published version): 10.1021/ja5110602

Abstract

A novel small molecule, FBR, bearing 3-ethylrhodanine flanking groups was synthesized as a nonfullerene electron acceptor for solution-processed bulk heterojunction organic photovoltaics (OPV). A straightforward synthesis route was employed, offering the potential for large scale preparation of this...

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Published in: Journal of the American Chemical Society
ISSN: 0002-7863 1520-5126
Published: 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa40520
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spelling 2021-01-11T11:00:40.5153364 v2 40520 2018-05-31 A Rhodanine Flanked Nonfullerene Acceptor for Solution-Processed Organic Photovoltaics f3dd64bc260e5c07adfa916c27dbd58a 0000-0001-8353-7345 James Durrant James Durrant true false 2018-05-31 MTLS A novel small molecule, FBR, bearing 3-ethylrhodanine flanking groups was synthesized as a nonfullerene electron acceptor for solution-processed bulk heterojunction organic photovoltaics (OPV). A straightforward synthesis route was employed, offering the potential for large scale preparation of this material. Inverted OPV devices employing poly(3-hexylthiophene) (P3HT) as the donor polymer and FBR as the acceptor gave power conversion efficiencies (PCE) up to 4.1%. Transient and steady state optical spectroscopies indicated efficient, ultrafast charge generation and efficient photocurrent generation from both donor and acceptor. Ultrafast transient absorption spectroscopy was used to investigate polaron generation efficiency as well as recombination dynamics. It was determined that the P3HT:FBR blend is highly intermixed, leading to increased charge generation relative to comparative devices with P3HT:PC60BM, but also faster recombination due to a nonideal morphology in which, in contrast to P3HT:PC60BM devices, the acceptor does not aggregate enough to create appropriate percolation pathways that prevent fast nongeminate recombination. Despite this nonoptimal morphology the P3HT:FBR devices exhibit better performance than P3HT:PC60BM devices, used as control, demonstrating that this acceptor shows great promise for further optimization. Journal Article Journal of the American Chemical Society 137 2 898 904 0002-7863 1520-5126 21 1 2015 2015-01-21 10.1021/ja5110602 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2021-01-11T11:00:40.5153364 2018-05-31T09:37:41.2851097 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Sarah Holliday 1 Raja Shahid Ashraf 2 Christian B. Nielsen 3 Mindaugas Kirkus 4 Jason A. Röhr 5 Ching-Hong Tan 6 Elisa Collado-Fregoso 7 Astrid-Caroline Knall 8 James Durrant 0000-0001-8353-7345 9 Jenny Nelson 10 Iain McCulloch 11
title A Rhodanine Flanked Nonfullerene Acceptor for Solution-Processed Organic Photovoltaics
spellingShingle A Rhodanine Flanked Nonfullerene Acceptor for Solution-Processed Organic Photovoltaics
James Durrant
title_short A Rhodanine Flanked Nonfullerene Acceptor for Solution-Processed Organic Photovoltaics
title_full A Rhodanine Flanked Nonfullerene Acceptor for Solution-Processed Organic Photovoltaics
title_fullStr A Rhodanine Flanked Nonfullerene Acceptor for Solution-Processed Organic Photovoltaics
title_full_unstemmed A Rhodanine Flanked Nonfullerene Acceptor for Solution-Processed Organic Photovoltaics
title_sort A Rhodanine Flanked Nonfullerene Acceptor for Solution-Processed Organic Photovoltaics
author_id_str_mv f3dd64bc260e5c07adfa916c27dbd58a
author_id_fullname_str_mv f3dd64bc260e5c07adfa916c27dbd58a_***_James Durrant
author James Durrant
author2 Sarah Holliday
Raja Shahid Ashraf
Christian B. Nielsen
Mindaugas Kirkus
Jason A. Röhr
Ching-Hong Tan
Elisa Collado-Fregoso
Astrid-Caroline Knall
James Durrant
Jenny Nelson
Iain McCulloch
format Journal article
container_title Journal of the American Chemical Society
container_volume 137
container_issue 2
container_start_page 898
publishDate 2015
institution Swansea University
issn 0002-7863
1520-5126
doi_str_mv 10.1021/ja5110602
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 0
active_str 0
description A novel small molecule, FBR, bearing 3-ethylrhodanine flanking groups was synthesized as a nonfullerene electron acceptor for solution-processed bulk heterojunction organic photovoltaics (OPV). A straightforward synthesis route was employed, offering the potential for large scale preparation of this material. Inverted OPV devices employing poly(3-hexylthiophene) (P3HT) as the donor polymer and FBR as the acceptor gave power conversion efficiencies (PCE) up to 4.1%. Transient and steady state optical spectroscopies indicated efficient, ultrafast charge generation and efficient photocurrent generation from both donor and acceptor. Ultrafast transient absorption spectroscopy was used to investigate polaron generation efficiency as well as recombination dynamics. It was determined that the P3HT:FBR blend is highly intermixed, leading to increased charge generation relative to comparative devices with P3HT:PC60BM, but also faster recombination due to a nonideal morphology in which, in contrast to P3HT:PC60BM devices, the acceptor does not aggregate enough to create appropriate percolation pathways that prevent fast nongeminate recombination. Despite this nonoptimal morphology the P3HT:FBR devices exhibit better performance than P3HT:PC60BM devices, used as control, demonstrating that this acceptor shows great promise for further optimization.
published_date 2015-01-21T03:51:34Z
_version_ 1763752536145133568
score 11.036684

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