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Exciton and Charge Generation in PC60BM Thin Films

Chaz Keiderling, Stoichko Dimitrov Orcid Logo, James Durrant Orcid Logo

The Journal of Physical Chemistry C, Volume: 121, Issue: 27, Pages: 14470 - 14475

Swansea University Authors: Stoichko Dimitrov Orcid Logo, James Durrant Orcid Logo

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DOI (Published version): 10.1021/acs.jpcc.7b03962

Abstract

Transient absorption spectroscopy is employed to contrast the photophysics of [6,6]-phenyl C61 butyric acid methyl ester (PC60BM) dispersed in a polystyrene matrix and as a neat film. For the dispersed PC60BM:polystyrene film, singlet excitons are observed that undergo intersystem crossing to triple...

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Published in: The Journal of Physical Chemistry C
ISSN: 1932-7447 1932-7455
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa34761
first_indexed 2017-07-27T14:27:26Z
last_indexed 2020-06-01T18:46:38Z
id cronfa34761
recordtype SURis
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spelling 2020-06-01T15:08:06.2529725 v2 34761 2017-07-27 Exciton and Charge Generation in PC60BM Thin Films 9fc26ec1b8655cd0d66f7196a924fe14 0000-0002-1564-7080 Stoichko Dimitrov Stoichko Dimitrov true false f3dd64bc260e5c07adfa916c27dbd58a 0000-0001-8353-7345 James Durrant James Durrant true false 2017-07-27 Transient absorption spectroscopy is employed to contrast the photophysics of [6,6]-phenyl C61 butyric acid methyl ester (PC60BM) dispersed in a polystyrene matrix and as a neat film. For the dispersed PC60BM:polystyrene film, singlet excitons are observed that undergo intersystem crossing to triplet excitons. In contrast, in the neat PC60BM film, the transient absorption data indicate significant polaron generation, with photogenerated polarons exhibiting dispersive, bimolecular charge recombination on the nano- to microsecond time scales. These results are discussed in terms of their implications for charge generation from PC60BM light absorption in polymer/fullerene solar cells. Journal Article The Journal of Physical Chemistry C 121 27 14470 14475 1932-7447 1932-7455 13 7 2017 2017-07-13 10.1021/acs.jpcc.7b03962 COLLEGE NANME COLLEGE CODE Swansea University 2020-06-01T15:08:06.2529725 2017-07-27T09:09:13.6604932 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Chaz Keiderling 1 Stoichko Dimitrov 0000-0002-1564-7080 2 James Durrant 0000-0001-8353-7345 3
title Exciton and Charge Generation in PC60BM Thin Films
spellingShingle Exciton and Charge Generation in PC60BM Thin Films
Stoichko Dimitrov
James Durrant
title_short Exciton and Charge Generation in PC60BM Thin Films
title_full Exciton and Charge Generation in PC60BM Thin Films
title_fullStr Exciton and Charge Generation in PC60BM Thin Films
title_full_unstemmed Exciton and Charge Generation in PC60BM Thin Films
title_sort Exciton and Charge Generation in PC60BM Thin Films
author_id_str_mv 9fc26ec1b8655cd0d66f7196a924fe14
f3dd64bc260e5c07adfa916c27dbd58a
author_id_fullname_str_mv 9fc26ec1b8655cd0d66f7196a924fe14_***_Stoichko Dimitrov
f3dd64bc260e5c07adfa916c27dbd58a_***_James Durrant
author Stoichko Dimitrov
James Durrant
author2 Chaz Keiderling
Stoichko Dimitrov
James Durrant
format Journal article
container_title The Journal of Physical Chemistry C
container_volume 121
container_issue 27
container_start_page 14470
publishDate 2017
institution Swansea University
issn 1932-7447
1932-7455
doi_str_mv 10.1021/acs.jpcc.7b03962
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 Transient absorption spectroscopy is employed to contrast the photophysics of [6,6]-phenyl C61 butyric acid methyl ester (PC60BM) dispersed in a polystyrene matrix and as a neat film. For the dispersed PC60BM:polystyrene film, singlet excitons are observed that undergo intersystem crossing to triplet excitons. In contrast, in the neat PC60BM film, the transient absorption data indicate significant polaron generation, with photogenerated polarons exhibiting dispersive, bimolecular charge recombination on the nano- to microsecond time scales. These results are discussed in terms of their implications for charge generation from PC60BM light absorption in polymer/fullerene solar cells.
published_date 2017-07-13T07:12:27Z
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score 11.047501

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