Novel organic dyes based on phenyl-substituted benzimidazole for dye sensitized solar cells

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dc.contributor.authorSaltan G.M.
dc.contributor.authorDinçalp H.
dc.contributor.authorKiran M.
dc.contributor.authorZafer C.
dc.contributor.authorErbaş S.Ç.
dc.date.accessioned2024-07-22T08:12:55Z
dc.date.available2024-07-22T08:12:55Z
dc.date.issued2015
dc.description.abstractTwo new sensitizers derived from benzimidazole core for dye-sensitized solar cell (DSSC) applications were designed and synthesized as D-π-A structures, in which two phenyl-substituted benzimidazole group, a phenyl ring and a cyanoacrylic acid were used as the electron donor, π-conjugated linkage and the electron acceptor, respectively. Effect of methoxy- and N,N-dimetylamino- moieties attached to the phenyl groups of benzimidazole were investigated by means of optical and photovoltaic measurements. The compounds exhibit broad absorption maximum at 387 nm with the tail extending up to 500 nm on TiO2-coated thin film. The longer wavelength absorption band around 360 nm and the much longer decay components could be attributed to the existence of charge transfer state of the dyes in solutions. DSSC device fabricated by using methoxy substituted dye (BI5a) as a sensitizer shows much better incident photon-to-current conversion efficiency (IPCE) of 64% giving cell efficiency of 2.68%. © 2015 Elsevier B.V. All rights reserved.
dc.identifier.DOI-ID10.1016/j.matchemphys.2015.07.055
dc.identifier.issn02540584
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/16222
dc.language.isoEnglish
dc.publisherElsevier Ltd
dc.subjectCharge transfer
dc.subjectEfficiency
dc.subjectElectric properties
dc.subjectLuminescence
dc.subjectOptical materials
dc.subjectOrganic polymers
dc.subjectOrganic solar cells
dc.subjectOxide minerals
dc.subjectPhotovoltaic effects
dc.subjectThin films
dc.subjectTitanium dioxide
dc.subjectBenzimidazole groups
dc.subjectBroad absorptions
dc.subjectCharge transfer state
dc.subjectDecay components
dc.subjectElectron acceptor
dc.subjectIncident photon-to-current conversion efficiencies
dc.subjectLonger wavelength absorptions
dc.subjectPhotovoltaic measurements
dc.subjectDye-sensitized solar cells
dc.titleNovel organic dyes based on phenyl-substituted benzimidazole for dye sensitized solar cells
dc.typeArticle

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