Effect of a pi-bridging unit in triphenylamine-benzothiadiazole based donor acceptor chromophores for dye-sensitized solar cells

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dc.authoridArkan, Mesude Zeliha/0000-0003-1972-0318
dc.authoridZAFER, CEYLAN/0000-0002-8407-2452
dc.authoridKoyuncu, Sermet/0000-0001-8352-8326
dc.contributor.authorYigit, Mesude Zeliha
dc.contributor.authorBilgili, Hakan
dc.contributor.authorSefer, Emre
dc.contributor.authorDemic, Serafettin
dc.contributor.authorZafer, Ceylan
dc.contributor.authorCan, Mustafa
dc.contributor.authorKoyuncu, Sermet
dc.date.accessioned2025-01-27T20:49:33Z
dc.date.available2025-01-27T20:49:33Z
dc.date.issued2014
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractTwo new metal free sensitizers based on triphenylamine-benzothiadiazole were synthesized and used in dye sensitized solar cells (DSSCs). Electrochemical and optical properties of the dyes were studied by cyclic voltammetry, UV-vis absorption and fluorescence spectroscopy. A red shift was observed by the attachment of a thiophene (MZ-259) instead of a phenylene (MZ-255) bridge. The reverse effect was observed in the electrochemical properties because of the more electron-donating thiophene incorporated into the cyanoacrylic acid as an anchoring-acceptor unit in this system resulted in a higher LUMO level. The charge distribution of the dyes was also proved by DFT calculations using the Spartan10 program with the parameters of B3LYP and 6-31G** basis set. Finally the photovoltaic performances were investigated under standard AM 1.5 illumination with a power of 100 mW/cm(2) using an ionic liquid based electrolyte. The power conversion efficiencies, eta, were increased from 3.16% to 3.81% by using thiophene instead of phenylene as a pi-bridge unit. (C) 2014 Elsevier Ltd. All rights reserved.
dc.identifier.doi10.1016/j.electacta.2014.09.138
dc.identifier.endpage625
dc.identifier.issn0013-4686
dc.identifier.issn1873-3859
dc.identifier.scopus2-s2.0-84908063170
dc.identifier.scopusqualityQ1
dc.identifier.startpage617
dc.identifier.urihttps://doi.org/10.1016/j.electacta.2014.09.138
dc.identifier.urihttps://hdl.handle.net/20.500.12428/25216
dc.identifier.volume147
dc.identifier.wosWOS:000346178800078
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofElectrochimica Acta
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectdonor-acceptor dyes
dc.subjectpi-bridge effect
dc.subjectdye sensitized solar cells
dc.titleEffect of a pi-bridging unit in triphenylamine-benzothiadiazole based donor acceptor chromophores for dye-sensitized solar cells
dc.typeArticle

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