Impact of Nonfullerene Acceptor Core Structure on the Photophysics and Efficiency of Polymer Solar Cells

Handle URI:
http://hdl.handle.net/10754/627308
Title:
Impact of Nonfullerene Acceptor Core Structure on the Photophysics and Efficiency of Polymer Solar Cells
Authors:
Alamoudi, Maha; Khan, Jafar Iqbal ( 0000-0001-6003-5641 ) ; Firdaus, Yuliar; Wang, Kai; Andrienko, Denis ( 0000-0002-1541-1377 ) ; Beaujuge, Pierre ( 0000-0003-2868-4494 ) ; Laquai, Frederic ( 0000-0002-5887-6158 )
Abstract:
Small-molecule “nonfullerene” acceptors are promising alternatives to fullerene (PC61/71BM) derivatives often used in bulk heterojunction (BHJ) organic solar cells; yet, the efficiency-limiting processes and their dependence on the acceptor structure are not clearly understood. Here, we investigate the impact of the acceptor core structure (cyclopenta-[2,1-b:3,4-b′]dithiophene (CDT) versus indacenodithiophene (IDTT)) of malononitrile (BM)-terminated acceptors, namely CDTBM and IDTTBM, on the photophysical characteristics of BHJ solar cells. Using PCE10 as donor polymer, the IDTT-based acceptor achieves power conversion efficiencies (8.4%) that are higher than those of the CDT-based acceptor (5.6%) because of a concurrent increase in short-circuit current and open-circuit voltage. Using (ultra)fast transient spectroscopy we demonstrate that reduced geminate recombination in PCE10:IDTTBM blends is the reason for the difference in short-circuit currents. External quantum efficiency measurements indicate that the higher energy of interfacial charge-transfer states observed for the IDTT-based acceptor blends is the origin of the higher open-circuit voltage.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; KAUST Solar Center (KSC)
Citation:
Alamoudi MA, Khan JI, Firdaus Y, Wang K, Andrienko D, et al. (2018) Impact of Nonfullerene Acceptor Core Structure on the Photophysics and Efficiency of Polymer Solar Cells. ACS Energy Letters: 802–811. Available: http://dx.doi.org/10.1021/acsenergylett.8b00045.
Publisher:
American Chemical Society (ACS)
Journal:
ACS Energy Letters
Issue Date:
2-Mar-2018
DOI:
10.1021/acsenergylett.8b00045
Type:
Article
ISSN:
2380-8195; 2380-8195
Sponsors:
The research reported in this publication was supported by the Office of Sponsored Research (OSR) under the Grant Agreement FCS/1/3321/01 and by the King Abdullah University of Science and Technology (KAUST). M.A.A. is grateful to Saudi Basic Industries Corporation (SABIC) for funding received towards the Ph.D.
Additional Links:
https://pubs.acs.org/doi/10.1021/acsenergylett.8b00045
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; KAUST Solar Center (KSC)

Full metadata record

DC FieldValue Language
dc.contributor.authorAlamoudi, Mahaen
dc.contributor.authorKhan, Jafar Iqbalen
dc.contributor.authorFirdaus, Yuliaren
dc.contributor.authorWang, Kaien
dc.contributor.authorAndrienko, Denisen
dc.contributor.authorBeaujuge, Pierreen
dc.contributor.authorLaquai, Fredericen
dc.date.accessioned2018-03-15T06:26:39Z-
dc.date.available2018-03-15T06:26:39Z-
dc.date.issued2018-03-02en
dc.identifier.citationAlamoudi MA, Khan JI, Firdaus Y, Wang K, Andrienko D, et al. (2018) Impact of Nonfullerene Acceptor Core Structure on the Photophysics and Efficiency of Polymer Solar Cells. ACS Energy Letters: 802–811. Available: http://dx.doi.org/10.1021/acsenergylett.8b00045.en
dc.identifier.issn2380-8195en
dc.identifier.issn2380-8195en
dc.identifier.doi10.1021/acsenergylett.8b00045en
dc.identifier.urihttp://hdl.handle.net/10754/627308-
dc.description.abstractSmall-molecule “nonfullerene” acceptors are promising alternatives to fullerene (PC61/71BM) derivatives often used in bulk heterojunction (BHJ) organic solar cells; yet, the efficiency-limiting processes and their dependence on the acceptor structure are not clearly understood. Here, we investigate the impact of the acceptor core structure (cyclopenta-[2,1-b:3,4-b′]dithiophene (CDT) versus indacenodithiophene (IDTT)) of malononitrile (BM)-terminated acceptors, namely CDTBM and IDTTBM, on the photophysical characteristics of BHJ solar cells. Using PCE10 as donor polymer, the IDTT-based acceptor achieves power conversion efficiencies (8.4%) that are higher than those of the CDT-based acceptor (5.6%) because of a concurrent increase in short-circuit current and open-circuit voltage. Using (ultra)fast transient spectroscopy we demonstrate that reduced geminate recombination in PCE10:IDTTBM blends is the reason for the difference in short-circuit currents. External quantum efficiency measurements indicate that the higher energy of interfacial charge-transfer states observed for the IDTT-based acceptor blends is the origin of the higher open-circuit voltage.en
dc.description.sponsorshipThe research reported in this publication was supported by the Office of Sponsored Research (OSR) under the Grant Agreement FCS/1/3321/01 and by the King Abdullah University of Science and Technology (KAUST). M.A.A. is grateful to Saudi Basic Industries Corporation (SABIC) for funding received towards the Ph.D.en
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.urlhttps://pubs.acs.org/doi/10.1021/acsenergylett.8b00045en
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Energy Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acsenergylett.8b00045.en
dc.titleImpact of Nonfullerene Acceptor Core Structure on the Photophysics and Efficiency of Polymer Solar Cellsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentKAUST Solar Center (KSC)en
dc.identifier.journalACS Energy Lettersen
dc.eprint.versionPost-printen
dc.contributor.institutionMax Planck Institute for Polymer Research (MPIP), Ackermannweg 10, D-55128 Mainz, Germanyen
kaust.authorAlamoudi, Mahaen
kaust.authorKhan, Jafar Iqbalen
kaust.authorFirdaus, Yuliaren
kaust.authorWang, Kaien
kaust.authorBeaujuge, Pierreen
kaust.authorLaquai, Fredericen
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