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Rational Design of Donor–Acceptor Based Semiconducting Copolymers with High Dielectric Constants

Aiswarya Abhisek Mohapatra, Yifan Dong, Puttaraju Boregowda, Ashutosh Mohanty, Aditya Sadhanala, Xuechen Jiao, Awadhesh Narayan, Christopher R. McNeill, James Durrant Orcid Logo

The Journal of Physical Chemistry C, Volume: 125, Issue: 12, Pages: 6886 - 6896

Swansea University Author: James Durrant Orcid Logo

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DOI (Published version): 10.1021/acs.jpcc.1c00340

Abstract

The low dielectric constant of organic semiconductors limits the efficiency of organic solar cells (OSCs). In an attempt to improve the dielectric constant of conjugated polymers, we report the synthesis of three semiconducting copolymers by combining the thiophene-substituted diketopyrrolopyrrole (...

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Published in: The Journal of Physical Chemistry C
ISSN: 1932-7447 1932-7455
Published: American Chemical Society (ACS) 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa56837
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spelling 2022-05-09T15:54:00.9524743 v2 56837 2021-05-10 Rational Design of Donor–Acceptor Based Semiconducting Copolymers with High Dielectric Constants f3dd64bc260e5c07adfa916c27dbd58a 0000-0001-8353-7345 James Durrant James Durrant true false 2021-05-10 MTLS The low dielectric constant of organic semiconductors limits the efficiency of organic solar cells (OSCs). In an attempt to improve the dielectric constant of conjugated polymers, we report the synthesis of three semiconducting copolymers by combining the thiophene-substituted diketopyrrolopyrrole (TDPP) monomer with three different monomeric units with varying electron donating/accepting strengths: benzodithiophene (BBT-3TEG-TDPP), TDPP (TDPP-3TEG-TDPP), and naphthalene diimide (P(gNDI-TDPP)). Among the series, BBT-3TEG-TDPP and P(gNDI-TDPP) exhibited the highest dielectric constants (∼5) at 1 MHz frequency, signifying the contribution of dipolar polarization from TEG side-chains. Furthermore, transient absorption spectroscopic studies performed on these polymers indicated low exciton diffusion length as observed in common organic semiconducting polymers. Our findings suggest that utilizing the polar side-chains enhances the dielectric constant in a frequency regime of megahertz. However, it is not sufficient to reduce the Coulombic interaction between hole and electron in excitonic solar cells. Journal Article The Journal of Physical Chemistry C 125 12 6886 6896 American Chemical Society (ACS) 1932-7447 1932-7455 Dielectric constant, triethyleneglycol sidechains, diketopyrrolopyrrole, Naphthalene diimide 1 4 2021 2021-04-01 10.1021/acs.jpcc.1c00340 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2022-05-09T15:54:00.9524743 2021-05-10T10:09:50.4368285 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Aiswarya Abhisek Mohapatra 1 Yifan Dong 2 Puttaraju Boregowda 3 Ashutosh Mohanty 4 Aditya Sadhanala 5 Xuechen Jiao 6 Awadhesh Narayan 7 Christopher R. McNeill 8 James Durrant 0000-0001-8353-7345 9 56837__20200__34039b41f1514f018f0e0e7134aa0e50.pdf 56837.pdf 2021-06-18T17:56:59.5657754 Output 3926847 application/pdf Accepted Manuscript true 2022-03-23T00:00:00.0000000 true eng
title Rational Design of Donor–Acceptor Based Semiconducting Copolymers with High Dielectric Constants
spellingShingle Rational Design of Donor–Acceptor Based Semiconducting Copolymers with High Dielectric Constants
James Durrant
title_short Rational Design of Donor–Acceptor Based Semiconducting Copolymers with High Dielectric Constants
title_full Rational Design of Donor–Acceptor Based Semiconducting Copolymers with High Dielectric Constants
title_fullStr Rational Design of Donor–Acceptor Based Semiconducting Copolymers with High Dielectric Constants
title_full_unstemmed Rational Design of Donor–Acceptor Based Semiconducting Copolymers with High Dielectric Constants
title_sort Rational Design of Donor–Acceptor Based Semiconducting Copolymers with High Dielectric Constants
author_id_str_mv f3dd64bc260e5c07adfa916c27dbd58a
author_id_fullname_str_mv f3dd64bc260e5c07adfa916c27dbd58a_***_James Durrant
author James Durrant
author2 Aiswarya Abhisek Mohapatra
Yifan Dong
Puttaraju Boregowda
Ashutosh Mohanty
Aditya Sadhanala
Xuechen Jiao
Awadhesh Narayan
Christopher R. McNeill
James Durrant
format Journal article
container_title The Journal of Physical Chemistry C
container_volume 125
container_issue 12
container_start_page 6886
publishDate 2021
institution Swansea University
issn 1932-7447
1932-7455
doi_str_mv 10.1021/acs.jpcc.1c00340
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 low dielectric constant of organic semiconductors limits the efficiency of organic solar cells (OSCs). In an attempt to improve the dielectric constant of conjugated polymers, we report the synthesis of three semiconducting copolymers by combining the thiophene-substituted diketopyrrolopyrrole (TDPP) monomer with three different monomeric units with varying electron donating/accepting strengths: benzodithiophene (BBT-3TEG-TDPP), TDPP (TDPP-3TEG-TDPP), and naphthalene diimide (P(gNDI-TDPP)). Among the series, BBT-3TEG-TDPP and P(gNDI-TDPP) exhibited the highest dielectric constants (∼5) at 1 MHz frequency, signifying the contribution of dipolar polarization from TEG side-chains. Furthermore, transient absorption spectroscopic studies performed on these polymers indicated low exciton diffusion length as observed in common organic semiconducting polymers. Our findings suggest that utilizing the polar side-chains enhances the dielectric constant in a frequency regime of megahertz. However, it is not sufficient to reduce the Coulombic interaction between hole and electron in excitonic solar cells.
published_date 2021-04-01T04:12:05Z
_version_ 1763753827754835968
score 11.014067

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