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Control over π-π stacking of heteroheptacene-based nonfullerene acceptors for 16% efficiency polymer solar cells
Nonfullerene acceptors are being investigated for use in polymer solar cells (PSCs), with their advantages of extending the absorption range, reducing the energy loss and therefore enhancing the power conversion efficiency (PCE). However, to further boost the PCE, mobilities of these nonfullerene ac...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8288506/ https://www.ncbi.nlm.nih.gov/pubmed/34691530 http://dx.doi.org/10.1093/nsr/nwaa189 |
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author | Ma, Yunlong Cai, Dongdong Wan, Shuo Yin, Pan Wang, Pengsong Lin, Wenyuan Zheng, Qingdong |
author_facet | Ma, Yunlong Cai, Dongdong Wan, Shuo Yin, Pan Wang, Pengsong Lin, Wenyuan Zheng, Qingdong |
author_sort | Ma, Yunlong |
collection | PubMed |
description | Nonfullerene acceptors are being investigated for use in polymer solar cells (PSCs), with their advantages of extending the absorption range, reducing the energy loss and therefore enhancing the power conversion efficiency (PCE). However, to further boost the PCE, mobilities of these nonfullerene acceptors should be improved. For nonfullerene acceptors, the π–π stacking distance between cofacially stacked molecules significantly affects their mobility. Here, we demonstrate a strategy to increase the mobility of heteroheptacene-based nonfullerene acceptors by reducing their π–π stacking distances via control over the bulkiness of lateral side chains. Incorporation of 2-butyloctyl substituents into the nonfullerene acceptor (M36) leads to an increased mobility with a reduced π–π stacking distance of 3.45 Å. Consequently, M36 affords an enhanced PCE of 16%, which is the highest among all acceptor-donor-acceptor-type nonfullerene acceptors to date. This strategy of control over the bulkiness of side chains on nonfullerene acceptors should aid the development of more efficient PSCs. |
format | Online Article Text |
id | pubmed-8288506 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-82885062021-10-21 Control over π-π stacking of heteroheptacene-based nonfullerene acceptors for 16% efficiency polymer solar cells Ma, Yunlong Cai, Dongdong Wan, Shuo Yin, Pan Wang, Pengsong Lin, Wenyuan Zheng, Qingdong Natl Sci Rev Materials Science Nonfullerene acceptors are being investigated for use in polymer solar cells (PSCs), with their advantages of extending the absorption range, reducing the energy loss and therefore enhancing the power conversion efficiency (PCE). However, to further boost the PCE, mobilities of these nonfullerene acceptors should be improved. For nonfullerene acceptors, the π–π stacking distance between cofacially stacked molecules significantly affects their mobility. Here, we demonstrate a strategy to increase the mobility of heteroheptacene-based nonfullerene acceptors by reducing their π–π stacking distances via control over the bulkiness of lateral side chains. Incorporation of 2-butyloctyl substituents into the nonfullerene acceptor (M36) leads to an increased mobility with a reduced π–π stacking distance of 3.45 Å. Consequently, M36 affords an enhanced PCE of 16%, which is the highest among all acceptor-donor-acceptor-type nonfullerene acceptors to date. This strategy of control over the bulkiness of side chains on nonfullerene acceptors should aid the development of more efficient PSCs. Oxford University Press 2020-08-25 /pmc/articles/PMC8288506/ /pubmed/34691530 http://dx.doi.org/10.1093/nsr/nwaa189 Text en © The Author(s) 2020. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Materials Science Ma, Yunlong Cai, Dongdong Wan, Shuo Yin, Pan Wang, Pengsong Lin, Wenyuan Zheng, Qingdong Control over π-π stacking of heteroheptacene-based nonfullerene acceptors for 16% efficiency polymer solar cells |
title | Control over π-π stacking of heteroheptacene-based nonfullerene acceptors for 16% efficiency polymer solar cells |
title_full | Control over π-π stacking of heteroheptacene-based nonfullerene acceptors for 16% efficiency polymer solar cells |
title_fullStr | Control over π-π stacking of heteroheptacene-based nonfullerene acceptors for 16% efficiency polymer solar cells |
title_full_unstemmed | Control over π-π stacking of heteroheptacene-based nonfullerene acceptors for 16% efficiency polymer solar cells |
title_short | Control over π-π stacking of heteroheptacene-based nonfullerene acceptors for 16% efficiency polymer solar cells |
title_sort | control over π-π stacking of heteroheptacene-based nonfullerene acceptors for 16% efficiency polymer solar cells |
topic | Materials Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8288506/ https://www.ncbi.nlm.nih.gov/pubmed/34691530 http://dx.doi.org/10.1093/nsr/nwaa189 |
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