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dc.contributor.authorPaleti, Sri Harish Kumar
dc.contributor.authorGasparini, Nicola
dc.contributor.authorChochos, Christos L.
dc.contributor.authorBaran, Derya
dc.date.accessioned2020-11-08T11:15:27Z
dc.date.available2020-11-08T11:15:27Z
dc.date.issued2020
dc.date.submitted2020-03-17
dc.identifier.citationPaleti, S. H. K., Gasparini, N., Chochos, C. L., & Baran, D. (2020). High performance conjugated terpolymers as electron donors in nonfullerene organic solar cells. Journal of Materials Chemistry C, 8(38), 13422–13429. doi:10.1039/d0tc01379j
dc.identifier.issn2050-7526
dc.identifier.issn2050-7534
dc.identifier.doi10.1039/d0tc01379j
dc.identifier.urihttp://hdl.handle.net/10754/665851
dc.description.abstractWe demonstrate the synthesis of three π-conjugated terpolymers based on the nonconventional molecular design strategy D1-D2-D1-A comprising two different multi-fused ladder-type arene electron donating moieties [(4,4′-bis(2-ethylhexyl)dithieno[3,2-b:2′,3′-d]silole)-2,6-diyl (DTS) as D1 and thienyl-substituted benzo[1,2-b:4,5-b′]dithiophene (BDT) derivatives as D2] and an electron withdrawing unit [5,6-difluoro-2,1,3-benzothiadiazole (DFBT) as A]. The implementation of these materials as electron donors is explored in high performance near infrared non-fullerene acceptor (NFA) organic solar cells utilizing the benchmark low bandgap NFA IEICO-4F. The triple bulk heterojunction blend systems provide the basis for a detailed structure-property-performance relationship in terms of BDT's thienyl substitution (alkyl, alkylthio and fluoro) by investigating the correlations between the molecular energy level alignments, performance, and device physics of OSCs. The alkylthienyl-BDT based π-conjugated terpolymer [P(DTS-BDT-DFBT)] exhibits the best photovoltaic performance delivering a power conversion efficiency of 10% with a high short circuit current density of 22.7 mA cm-2. The combination of optoelectronic measurements and morphological analyses revealed the suppression of field dependent charge recombination in P(DTS-BDT-DFBT):IEICO-4F as compared to alkylthiothienyl-BDT [P(DTS-BDTS-DFBT):IEICO-4F] and fluoro-substituted thienyl-BDT [P(DTS-BDTF-DFBT):IEICO-4F] based OSC devices.
dc.description.sponsorshipWe acknowledge the support of King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No. OSR-2018-CARF/CCF-3079.
dc.publisherRoyal Society of Chemistry (RSC)
dc.relation.urlhttp://xlink.rsc.org/?DOI=D0TC01379J
dc.rightsArchived with thanks to Journal of Materials Chemistry C
dc.titleHigh performance conjugated terpolymers as electron donors in nonfullerene organic solar cells
dc.typeArticle
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentKAUST Solar Center (KSC)
dc.identifier.journalJournal of Materials Chemistry C
dc.rights.embargodate2021-09-18
dc.eprint.versionPost-print
dc.contributor.institutionAdvent Technologies SA Stadiou Street Platani Rio Patras 26504 Greece
dc.contributor.institutionInstitute of Chemical Biology, National Hellenic Research Foundation 48 Vassileos Constantinou Avenue Athens 11635
dc.identifier.volume8
dc.identifier.issue38
dc.identifier.pages13422-13429
kaust.personPaleti, Sri Harish Kumar
kaust.personGasparini, Nicola
kaust.personBaran, Derya
kaust.grant.numberAward No. OSR-2018-CARF/CCF-3079.
dc.date.accepted2020-06-16
dc.identifier.eid2-s2.0-85094865276
refterms.dateFOA2020-11-11T07:29:59Z
kaust.acknowledged.supportUnitCCF
kaust.acknowledged.supportUnitOffice of Sponsored Research (OSR)


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