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Improvement of the optoelectronic and photovoltaic properties of a cyanopyrid-2,6-dione-based donor via molecular engineering
journal contribution
posted on 2019-11-01, 00:00 authored by A K Hundal, A Agarwal, M Jameel, Jingyu Chen, Jingliang LiJingliang Li, L Jones, N Kaur, S Langford, Akhil GuptaThrough the molecular engineering of cyanopyrid-2,6-dione functionality, herein we report the design and synthesis of a novel, small molecule electron donor, (Z)-5-((5'-(4-(diphenylamino)phenyl)-[2,2′-bithiophen]-5-yl)methylene)-1-(4-(hexyloxy)phenyl)-4-methyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile (coded as CP2), which exhibits improved optoelectronic and photovoltaic properties when compared with its structural analogue (E)-5-((5'-(4-(diphenylamino)phenyl)-[2,2′-bithiophen]-5-yl)methylene)-1-(2-ethylhexyl)-4-methyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile (coded as CP1). The molecular engineering helps to achieve more desirable energy levels together with bathochromic shift in the absorption spectrum, which improves the short-circuit current density. A high conversion efficiency of 6.28% was obtained in simple devices (CP2: PC61BM 1: 1) which is one of the best results in the current literature for cyanopyrid-2,6-dione-based small molecule donors.
History
Journal
Dyes and pigmentsVolume
170Article number
107661Pagination
1 - 7Publisher
ElsevierLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
0143-7208eISSN
1873-3743Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2019, Elsevier Ltd.Usage metrics
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Triphenylamine4-HexyloxyanilineOrganic solar cellSmall molecule donorScience & TechnologyPhysical SciencesTechnologyChemistry, AppliedEngineering, ChemicalMaterials Science, TextilesChemistryEngineeringMaterials ScienceORGANIC SOLAR-CELLSOPEN-CIRCUIT VOLTAGEFULLERENEACCEPTOREFFICIENCYOLIGOTHIOPHENECHROMOPHORESSERIESAMINEUNIT
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