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dc.contributor.authorOklem, Gulce
dc.contributor.authorSong, Xin
dc.contributor.authorToppare, Levent
dc.contributor.authorBaran, Derya
dc.contributor.authorGunbas, Gorkem
dc.date.accessioned2018-02-13T13:43:19Z
dc.date.available2018-02-13T13:43:19Z
dc.date.issued2018
dc.identifier.citationOklem G, Song X, Toppare L, Baran D, Gunbas G (2018) New NIR Absorbing DPP-based Polymer for Thick Organic Solar Cells. Journal of Materials Chemistry C. Available: http://dx.doi.org/10.1039/c8tc00113h.
dc.identifier.issn2050-7526
dc.identifier.issn2050-7534
dc.identifier.doi10.1039/c8tc00113h
dc.identifier.urihttp://hdl.handle.net/10754/627121
dc.description.abstractinfrared region (NIR) for better photon harvesting in organic solar cells. It has been shown that copolymers compromising diketopyrrolopyrrole based acceptors and simple donors (thiophene or furan) achieve absorption maximum around 800 nm. In this study, the selenophene based donor units coupled with diketopyrrolopyrrole acceptor unit based polymer (PFDPPSe) was synthesized with an absorption maximum at 830 nm and absorption onset of 930 nm. The optimized organic solar cells with PFDDPSe: PC71BM active layer blends of 210 nm showed maximum PCE of 6.16 % (ave. 6.02 %) via solvent additive engineering with inverted device structure. Charge transport, recombination loss mechanism, and morphology are systematically studied. These results demonstrate that highly efficient NIR polymer can be achieved by the introduction of selenophene and a suitable solvent additive process suitable for NIR organic solar cells. PFDPPSe is also one of the rare examples of a polymer with a PCE over 6% that does not contain any thiophene-based unit in its backbone.
dc.description.sponsorshipThis work was supported by the Scientific and Technological Research Council of Turkey (TÜBİTAK), Grant No: 115M036. D.B. acknowledges KAUST KSC Solar Center Competitive Fund.
dc.publisherRoyal Society of Chemistry (RSC)
dc.relation.urlhttp://pubs.rsc.org/en/Content/ArticleLanding/2018/TC/C8TC00113H#!divAbstract
dc.rightsArchived with thanks to Journal of Materials Chemistry C
dc.titleNew NIR Absorbing DPP-based Polymer for Thick Organic Solar Cells
dc.typeArticle
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalJournal of Materials Chemistry C
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Polymer Science & Technology, Middle East Technical University
dc.contributor.institutionThe Center for Solar Energy Research and Applications, METU
dc.contributor.institutionDepartment of Chemistry, Middle East Technical University (METU)
kaust.personSong, Xin
kaust.personBaran, Derya
refterms.dateFOA2019-02-05T00:00:00Z


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