Quantification of the Effects of Recombination and Injection in the Performance of Dye-Sensitized Solar Cells Based on N-Substituted Carbazole Dyes

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dc.authoridgultekin, burak/0000-0002-8804-7844
dc.authoridFabregat-Santiago, Francisco/0000-0002-7503-1245
dc.authoridBisquert, Juan/0000-0003-4987-4887
dc.authoridKoyuncu, Sermet/0000-0001-8352-8326
dc.authoridBarea, Eva M/0000-0002-9496-5828
dc.authoridZAFER, CEYLAN/0000-0002-8407-2452
dc.contributor.authorBarea, Eva M.
dc.contributor.authorZafer, Ceylan
dc.contributor.authorGultekin, Burak
dc.contributor.authorAydin, Banu
dc.contributor.authorKoyuncu, Sermet
dc.contributor.authorIcli, Siddik
dc.contributor.authorFabregat Santiago, Francisco
dc.date.accessioned2025-01-27T20:49:32Z
dc.date.available2025-01-27T20:49:32Z
dc.date.issued2010
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractTwo new sensitizers for dye sensitized solar cells have been designed consisting of thiophene units asymmetrically functionalized by N-aryl carbazole. The di(tert-butyl) carbazole moieties acts as an electron donor group, the thiophene chain as a bridge group, and the cyanoacrylic acid as an anchoring and electron acceptor group. An increase of the conjugation length produces two main effects: first, it leads to a red-shift of the optical absorption of the dyes, resulting in an improved overlap of the absorption with the solar spectrum. Second, the oxidation potential decreases. The photovoltaic performance of this set of dyes as sensitizers in mesoporous TiO2 solar cells was investigated using electrolytes containing the iodide/triiodide redox couple. The dye with the best absorption characteristics showed the highest photocurrent but lower open circuit voltage due to more losses by recombination. A trend between structure (molecule dyes size) and recombination is demostrated using an analysis procedure based on beta-recombination model that combines impedance spectroscopy and density current-voltage data.
dc.description.sponsorshipMinisterio de Ciencia e Innovacion [CSD2007-00007, MAT2007-62982]; Generalitat Valenciana [PROMETEO/2009/058]; State Planning Organization of Turkey (DPT)
dc.description.sponsorshipWe are thankful for financial support from Ministerio de Ciencia e Innovacion under Projects HOPE CSD2007-00007 and MAT2007-62982 and Generalitat Valenciana under Project PROMETEO/2009/058. We also acknowledge financial support from State Planning Organization of Turkey (DPT).
dc.identifier.doi10.1021/jp1055842
dc.identifier.endpage19848
dc.identifier.issn1932-7447
dc.identifier.issn1932-7455
dc.identifier.issue46
dc.identifier.scopus2-s2.0-78649706433
dc.identifier.scopusqualityQ1
dc.identifier.startpage19840
dc.identifier.urihttps://doi.org/10.1021/jp1055842
dc.identifier.urihttps://hdl.handle.net/20.500.12428/25211
dc.identifier.volume114
dc.identifier.wosWOS:000284287900040
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAmer Chemical Soc
dc.relation.ispartofJournal of Physical Chemistry C
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectOrganic Sensitizers
dc.subjectMolecular-Structure
dc.subjectHigh-Efficiency
dc.subjectElectrolyte
dc.subjectDiffusion
dc.subjectImpedance
dc.subjectTransport
dc.titleQuantification of the Effects of Recombination and Injection in the Performance of Dye-Sensitized Solar Cells Based on N-Substituted Carbazole Dyes
dc.typeArticle

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