No Cover Image

Journal article 1213 views 123 downloads

Photophysical Study of DPPTT-T/PC70BM Blends and Solar Devices as a Function of Fullerene Loading: An Insight into EQE Limitations of DPP-Based Polymers

Elisa Collado-Fregoso, Florent Deledalle, Hendrik Utzat, Pabitra S. Tuladhar, Stoichko Dimitrov Orcid Logo, Alexander Gillett, Ching-Hong Tan, Weimin Zhang, Iain McCulloch, James Durrant Orcid Logo

Advanced Functional Materials

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

Check full text

DOI (Published version): 10.1002/adfm.201604426

Abstract

Diketopyrrolopyrrole (DPP)-based polymers have been consistently used for the fabrication of solar cell devices and transistors due to the existence of intermolecular short contacts, resulting in high electron and hole mobilities. However, they also often show limited external quantum efficiencies (...

Full description

Published in: Advanced Functional Materials
ISSN: 1616-301X
Published: 2016
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa31642
Tags: Add Tag
No Tags, Be the first to tag this record!
first_indexed 2017-01-18T14:53:39Z
last_indexed 2018-02-09T05:18:46Z
id cronfa31642
recordtype SURis
fullrecord <?xml version="1.0"?><rfc1807><datestamp>2017-01-20T09:19:47.1075685</datestamp><bib-version>v2</bib-version><id>31642</id><entry>2017-01-18</entry><title>Photophysical Study of DPPTT-T/PC70BM Blends and Solar Devices as a Function of Fullerene Loading: An Insight into EQE Limitations of DPP-Based Polymers</title><swanseaauthors><author><sid>9fc26ec1b8655cd0d66f7196a924fe14</sid><ORCID>0000-0002-1564-7080</ORCID><firstname>Stoichko</firstname><surname>Dimitrov</surname><name>Stoichko Dimitrov</name><active>true</active><ethesisStudent>false</ethesisStudent></author><author><sid>f3dd64bc260e5c07adfa916c27dbd58a</sid><ORCID>0000-0001-8353-7345</ORCID><firstname>James</firstname><surname>Durrant</surname><name>James Durrant</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2017-01-18</date><deptcode>EEN</deptcode><abstract>Diketopyrrolopyrrole (DPP)-based polymers have been consistently used for the fabrication of solar cell devices and transistors due to the existence of intermolecular short contacts, resulting in high electron and hole mobilities. However, they also often show limited external quantum efficiencies (EQEs). In this contribution, the authors analyze the limitations on EQE by a combined study of exciton dissociation efficiency, charge separation, and recombination kinetics in thin films and solar devices of a DPP-based donor polymer, DPPTT-T (thieno[3,2-b]thiophene-diketopyrrolopyrrole copolymer) blended with varying weight fractions of the fullerene acceptor PC70BM. From the correlations between photoluminescence quenching, transient absorption studies, and EQE measurements, it is concluded that the main limitation of photon-to-charge conversion in DPPTT-T/PC70BM devices is poor exciton dissociation. This exciton quenching limit is related not only to the low affinity/miscibility of the materials, as confirmed by wide angle X-ray diffraction diffraction and transmission electron microscopy data, but also to the relatively short DPPTT-T singlet exciton lifetime, possibly associated with high nonradiative losses. A further strategy to improve EQE in this class of polymers without sacrificing the good extraction properties in optimized blends is therefore to limit those nonradiative decay processes.</abstract><type>Journal Article</type><journal>Advanced Functional Materials</journal><publisher/><issnPrint>1616-301X</issnPrint><keywords/><publishedDay>31</publishedDay><publishedMonth>12</publishedMonth><publishedYear>2016</publishedYear><publishedDate>2016-12-31</publishedDate><doi>10.1002/adfm.201604426</doi><url/><notes/><college>COLLEGE NANME</college><department>Engineering</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>EEN</DepartmentCode><institution>Swansea University</institution><apcterm/><lastEdited>2017-01-20T09:19:47.1075685</lastEdited><Created>2017-01-18T10:55:13.9222830</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Engineering and Applied Sciences - Materials Science and Engineering</level></path><authors><author><firstname>Elisa</firstname><surname>Collado-Fregoso</surname><order>1</order></author><author><firstname>Florent</firstname><surname>Deledalle</surname><order>2</order></author><author><firstname>Hendrik</firstname><surname>Utzat</surname><order>3</order></author><author><firstname>Pabitra S.</firstname><surname>Tuladhar</surname><order>4</order></author><author><firstname>Stoichko</firstname><surname>Dimitrov</surname><orcid>0000-0002-1564-7080</orcid><order>5</order></author><author><firstname>Alexander</firstname><surname>Gillett</surname><order>6</order></author><author><firstname>Ching-Hong</firstname><surname>Tan</surname><order>7</order></author><author><firstname>Weimin</firstname><surname>Zhang</surname><order>8</order></author><author><firstname>Iain</firstname><surname>McCulloch</surname><order>9</order></author><author><firstname>James</firstname><surname>Durrant</surname><orcid>0000-0001-8353-7345</orcid><order>10</order></author></authors><documents><document><filename>0031642-20012017091852.pdf</filename><originalFilename>collado-fregoso2017.pdf</originalFilename><uploaded>2017-01-20T09:18:52.5530000</uploaded><type>Output</type><contentLength>919544</contentLength><contentType>application/pdf</contentType><version>Accepted Manuscript</version><cronfaStatus>true</cronfaStatus><embargoDate>2017-12-27T00:00:00.0000000</embargoDate><copyrightCorrect>false</copyrightCorrect></document></documents><OutputDurs/></rfc1807>
spelling 2017-01-20T09:19:47.1075685 v2 31642 2017-01-18 Photophysical Study of DPPTT-T/PC70BM Blends and Solar Devices as a Function of Fullerene Loading: An Insight into EQE Limitations of DPP-Based Polymers 9fc26ec1b8655cd0d66f7196a924fe14 0000-0002-1564-7080 Stoichko Dimitrov Stoichko Dimitrov true false f3dd64bc260e5c07adfa916c27dbd58a 0000-0001-8353-7345 James Durrant James Durrant true false 2017-01-18 EEN Diketopyrrolopyrrole (DPP)-based polymers have been consistently used for the fabrication of solar cell devices and transistors due to the existence of intermolecular short contacts, resulting in high electron and hole mobilities. However, they also often show limited external quantum efficiencies (EQEs). In this contribution, the authors analyze the limitations on EQE by a combined study of exciton dissociation efficiency, charge separation, and recombination kinetics in thin films and solar devices of a DPP-based donor polymer, DPPTT-T (thieno[3,2-b]thiophene-diketopyrrolopyrrole copolymer) blended with varying weight fractions of the fullerene acceptor PC70BM. From the correlations between photoluminescence quenching, transient absorption studies, and EQE measurements, it is concluded that the main limitation of photon-to-charge conversion in DPPTT-T/PC70BM devices is poor exciton dissociation. This exciton quenching limit is related not only to the low affinity/miscibility of the materials, as confirmed by wide angle X-ray diffraction diffraction and transmission electron microscopy data, but also to the relatively short DPPTT-T singlet exciton lifetime, possibly associated with high nonradiative losses. A further strategy to improve EQE in this class of polymers without sacrificing the good extraction properties in optimized blends is therefore to limit those nonradiative decay processes. Journal Article Advanced Functional Materials 1616-301X 31 12 2016 2016-12-31 10.1002/adfm.201604426 COLLEGE NANME Engineering COLLEGE CODE EEN Swansea University 2017-01-20T09:19:47.1075685 2017-01-18T10:55:13.9222830 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Elisa Collado-Fregoso 1 Florent Deledalle 2 Hendrik Utzat 3 Pabitra S. Tuladhar 4 Stoichko Dimitrov 0000-0002-1564-7080 5 Alexander Gillett 6 Ching-Hong Tan 7 Weimin Zhang 8 Iain McCulloch 9 James Durrant 0000-0001-8353-7345 10 0031642-20012017091852.pdf collado-fregoso2017.pdf 2017-01-20T09:18:52.5530000 Output 919544 application/pdf Accepted Manuscript true 2017-12-27T00:00:00.0000000 false
title Photophysical Study of DPPTT-T/PC70BM Blends and Solar Devices as a Function of Fullerene Loading: An Insight into EQE Limitations of DPP-Based Polymers
spellingShingle Photophysical Study of DPPTT-T/PC70BM Blends and Solar Devices as a Function of Fullerene Loading: An Insight into EQE Limitations of DPP-Based Polymers
Stoichko Dimitrov
James Durrant
title_short Photophysical Study of DPPTT-T/PC70BM Blends and Solar Devices as a Function of Fullerene Loading: An Insight into EQE Limitations of DPP-Based Polymers
title_full Photophysical Study of DPPTT-T/PC70BM Blends and Solar Devices as a Function of Fullerene Loading: An Insight into EQE Limitations of DPP-Based Polymers
title_fullStr Photophysical Study of DPPTT-T/PC70BM Blends and Solar Devices as a Function of Fullerene Loading: An Insight into EQE Limitations of DPP-Based Polymers
title_full_unstemmed Photophysical Study of DPPTT-T/PC70BM Blends and Solar Devices as a Function of Fullerene Loading: An Insight into EQE Limitations of DPP-Based Polymers
title_sort Photophysical Study of DPPTT-T/PC70BM Blends and Solar Devices as a Function of Fullerene Loading: An Insight into EQE Limitations of DPP-Based Polymers
author_id_str_mv 9fc26ec1b8655cd0d66f7196a924fe14
f3dd64bc260e5c07adfa916c27dbd58a
author_id_fullname_str_mv 9fc26ec1b8655cd0d66f7196a924fe14_***_Stoichko Dimitrov
f3dd64bc260e5c07adfa916c27dbd58a_***_James Durrant
author Stoichko Dimitrov
James Durrant
author2 Elisa Collado-Fregoso
Florent Deledalle
Hendrik Utzat
Pabitra S. Tuladhar
Stoichko Dimitrov
Alexander Gillett
Ching-Hong Tan
Weimin Zhang
Iain McCulloch
James Durrant
format Journal article
container_title Advanced Functional Materials
publishDate 2016
institution Swansea University
issn 1616-301X
doi_str_mv 10.1002/adfm.201604426
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 Diketopyrrolopyrrole (DPP)-based polymers have been consistently used for the fabrication of solar cell devices and transistors due to the existence of intermolecular short contacts, resulting in high electron and hole mobilities. However, they also often show limited external quantum efficiencies (EQEs). In this contribution, the authors analyze the limitations on EQE by a combined study of exciton dissociation efficiency, charge separation, and recombination kinetics in thin films and solar devices of a DPP-based donor polymer, DPPTT-T (thieno[3,2-b]thiophene-diketopyrrolopyrrole copolymer) blended with varying weight fractions of the fullerene acceptor PC70BM. From the correlations between photoluminescence quenching, transient absorption studies, and EQE measurements, it is concluded that the main limitation of photon-to-charge conversion in DPPTT-T/PC70BM devices is poor exciton dissociation. This exciton quenching limit is related not only to the low affinity/miscibility of the materials, as confirmed by wide angle X-ray diffraction diffraction and transmission electron microscopy data, but also to the relatively short DPPTT-T singlet exciton lifetime, possibly associated with high nonradiative losses. A further strategy to improve EQE in this class of polymers without sacrificing the good extraction properties in optimized blends is therefore to limit those nonradiative decay processes.
published_date 2016-12-31T03:38:40Z
_version_ 1763751724755976192
score 11.035655

Similar Items