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Direct connection of an amine to oligothiophene to generate push-pull chromophores for organic photovoltaic applications
journal contribution
posted on 2019-03-01, 00:00 authored by A Agarwal, A K Hundal, Jingyu Chen, A Bilic, W Xiang, S V Bhosale, Jingliang LiJingliang Li, R A Evans, Akhil Gupta© 2018 Elsevier Ltd Through the direct connection of the donor nitrogen atom to oligothiophenes, herein we report three novel, donor materials for evaluation in bulk-heterojunction solar cells. The direct substitution enhances the charge transfer transition, thus improving the light-harvesting ability of the target chromophores. The influence of various terminal acceptor functionalities on the optoelectronic and photovoltaic properties was systematically studied. The target chromophore, T3, bearing oxoindenemalononitrile acceptor unit afforded a power conversion efficiency of 6.12% when paired with the conventional acceptor, PC61BM, a result that is the highest in the current literature for push-pull chromophores.
History
Journal
Dyes and pigmentsVolume
162Pagination
315 - 323Publisher
ElsevierLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
0143-7208eISSN
1873-3743Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2018, ElsevierUsage metrics
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Solution-processableDitolylaminoOligothiopheneBulk-heterojunctionDonor-acceptorScience & TechnologyPhysical SciencesTechnologyChemistry, AppliedEngineering, ChemicalMaterials Science, TextilesChemistryEngineeringMaterials ScienceNON-FULLERENE ACCEPTORSMALL-MOLECULETRIPHENYLAMINEMORPHOLOGYEFFICIENCYDEVICES
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