Insight into interface engineering at TiO2/dye through molecularly functionalized caf1 biopolymer

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dc.authorid0000-0001-9852-7246en_US
dc.authorid0000-0002-8755-2822en_US
dc.authorid0000-0002-6011-3504en_US
dc.contributor.authorAkın, Seçkin
dc.contributor.authorUlusu, Yakup
dc.contributor.authorWaller, Helen
dc.contributor.authorLakey, Jeremy H.
dc.contributor.authorSönmezoğlu, Savaş
dc.date.accessioned2019-12-06T21:15:37Z
dc.date.available2019-12-06T21:15:37Z
dc.date.issued2018
dc.departmentKMÜ, Mühendislik Fakültesi, Metalurji ve Malzeme Mühendisliği Bölümüen_US
dc.descriptionWOS:000424728300036en_US
dc.description.abstractThe fast charge recombination kinetics and poor sensitizing ability in dye-sensitized solar cells (DSSCs) result in a significant electron loss and performance degradation. However, the retarding of electron recombination and/or increasing light-harvesting efficiency (LHE) via employing an appropriate interface modifier in DSSCs has rarely been investigated. Here, we first report a molecularly engineered Caf1 protein (both in monomeric and polymeric forms) to modify the surface states by effectively shielding the unfavorable reactions and improve the light absorption properties by introducing alternative anchoring facilities. Using the novel Caf1 biopolymer with high thermal stability (even at 90 degrees C), we achieved an unprecedented efficiency of 8.31% under standard illumination test conditions and maintain the output performance even under prolonged irradiation. Time-resolved fluorescence spectroscopy measurement reveals an improved electron transfer rate (k(ET) = 0.26 to 0.98 x 10(8) s(-1)), whereas the V-oc decay rate is lower (70% decay in 90 s) for Caf1-P@TiO2 based cells than that of bare ones (similar to 85% decay in <10 s). We attributed this trend to the presence of chains in the biopolymer structure and the enhanced population of binding facilities with sensitizer molecules, promoting rapid charge transfer into TiO2 and enhanced dye-loading capability. Our results shed light on the interface engineering, and this novel Caf1 biopolymer offers a meaningful transfer of energy to develop efficient electrochemical cells with attractive properties for scale up and practical applications.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) on the 2219-International Post-Doctoral Research Fellowship Programmeen_US
dc.description.sponsorshipThe authors would like to express their thanks to Dr. Andrei Soliakov due to his excellent technical support for providing the TEM image of polymeric Cafl. Y. Ulusu was funded by the Scientific and Technological Research Council of Turkey (TUBITAK) on the 2219-International Post-Doctoral Research Fellowship Programme.en_US
dc.identifier.citationAkın, S., Sönmezoğlu, S., Akın, S., Sönmezoğlu, S., Ulusu, Y., Ulusu, Y. (2018). Insight into interface engineering at TiO2/dye through molecularly functionalized caf1 biopolymer. Acs Sustainable Chemistry and Engineering, 6, 2, 1825-1836.
dc.identifier.doi10.1021/acssuschemeng.7b03206
dc.identifier.endpage1836en_US
dc.identifier.issn2168-0485
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-85041489959
dc.identifier.scopusqualityQ1
dc.identifier.startpage1825en_US
dc.identifier.urihttps://dx.doi.org/10.1021/acssuschemeng.7b03206
dc.identifier.urihttps://hdl.handle.net/11492/2660
dc.identifier.volume6en_US
dc.identifier.wosWOS:000424728300036
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Sceince
dc.indekslendigikaynakScopus
dc.institutionauthorAkın, Seçkin
dc.institutionauthorUlusu, Yakup
dc.institutionauthorSönmezoğlu, Savaş
dc.language.isoen
dc.publisherAmer Chemical Socen_US
dc.relation.journalACS SUSTAINABLE CHEMISTRY & ENGINEERINGen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectDye-Sensitized Solar Cellen_US
dc.subjectInterface Engineering at TiO2/Dyeen_US
dc.subjectRecombination Kineticsen_US
dc.subjectPhotoinduced Electron Transferen_US
dc.subjectCaf1 Biopolymeren_US
dc.titleInsight into interface engineering at TiO2/dye through molecularly functionalized caf1 biopolymeren_US
dc.typeArticle

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