Small biomolecule dopant retinals: Electron blocking layer in P3HT:PCBM type organic solar cells

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dc.contributor.authorKirmaci, Eser
dc.contributor.authorDincalp, Haluk
dc.contributor.authorSaltan, Gozde Murat
dc.contributor.authorKiran, Merve
dc.contributor.authorZafer, Ceylan
dc.date.accessioned2019-10-27T10:43:03Z
dc.date.available2019-10-27T10:43:03Z
dc.date.issued2018
dc.departmentEge Üniversitesien_US
dc.description.abstractWe present a comparative study of the photophysics and electron/hole properties of all-trans retinal-benzimidazole type molecules decorated with different electronic moieties (such as -OCH3, -N(CH3)(2), -F, -CF3) in organic photovoltaic (OPV) devices in solution end on solid thin films. Steady-state spectra of synthesized dyes give large Stokes shifts (6887-13152 cm(-1)) in studied solvents. Decay times of these dyes were found to be substituent dependent giving a bi-exponential decay for fluorine containing retinals. Trans to cis photo-isomerization rate constants of synthesized dyes were found to be about 3.3-16.4 x 10(-6) s(-1). Using a cyclic voltammetry measurements, HOMO and LUMO energy levels of fluorine-substituted dyes shift to lower values as compared to that of unfluorinated derivatives. We compared unusual electron blocking behavior of methoxy- and N,N-dimethylamino-substituted derivatives (Ret-I and Ret-II, respectively) in bulk heterojunction solar cells (BHJ-SCs) incorporating an active layer of P3HT:PCBM doped with Ret derivatives at various weight ratios. Hole mobility values for fluorine containing retinals were found to be about 1.0 x 10(-4) and 7.1 x 10(-4) cm(2)/V s for Retail and Ret-IV dyes, respectively.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [113Z250]en_US
dc.description.sponsorshipThis work was supported by the Scientific and Technological Research Council of Turkey (TUBITAK) with the project number of 113Z250. The authors also thank to Ege University for the support of the use of Gaussian 09W program for theoretical DFT calculations.en_US
dc.identifier.doi10.1016/j.synthmet.2017.11.012
dc.identifier.endpage18en_US
dc.identifier.issn0379-6779
dc.identifier.issn0379-6779en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage8en_US
dc.identifier.urihttps://doi.org/10.1016/j.synthmet.2017.11.012
dc.identifier.urihttps://hdl.handle.net/11454/30720
dc.identifier.volume236en_US
dc.identifier.wosWOS:000425573700002en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofSynthetic Metalsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectOptoelectronic materialsen_US
dc.subjectRetinalen_US
dc.subjectPhotoisomerizationen_US
dc.subjectElectron blockingen_US
dc.subjectPhotovoltaicen_US
dc.titleSmall biomolecule dopant retinals: Electron blocking layer in P3HT:PCBM type organic solar cellsen_US
dc.typeArticleen_US

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