Azulenocyanines immobilized on graphene; on the way to panchromatic absorption and efficient DSSC blocking layers

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dc.authoridTorres, Tomas/0000-0001-9335-6935
dc.authoridInce, Mine/0000-0002-9164-0446
dc.contributor.authorVolland, Michel
dc.contributor.authorLennert, Annkatrin
dc.contributor.authorRoth, Alexandra
dc.contributor.authorInce, Mine
dc.contributor.authorTorres, Tomas
dc.contributor.authorGuldi, Dirk M.
dc.date.accessioned2025-03-17T12:25:54Z
dc.date.available2025-03-17T12:25:54Z
dc.date.issued2019
dc.departmentTarsus Üniversitesi
dc.description.abstractHerein, a novel electron donor-acceptor hybrid consisting of a NIR absorbing azulenocyanine as an electron donor and few-layer graphene as an electron acceptor was prepared. The extended aromatic core of azulenocyanine (1) assists in the exfoliation of graphite and allows the formation of a very high-quality few-layer graphene azulenocyanine hybrid system (2). The formation of a stable azulenocyanine/graphene hybrid was verified by means of an arsenal of spectroscopic and microscopic techniques. Notable is the fact that the absorption spectrum recorded for 1 and likewise that for 2 covers large portions of the solar spectrum, that is, from the UV through the visible to the NIR region. In light of the latter, we incorporated 1 as well as 2 as a photosensitizer in dye sensitized solar cells (DSSCs) and probed their light harvesting. Besides an increase in the photovoltaic conversion efficiency we focused on the stability of DSSCs by preventing charge recombination between FTO and the liquid electrolyte. We used 2 as a blocking layer and in comparison with a TiCl4 pretreated blocking layer a superior conversion efficiency was realized.
dc.description.sponsorshipdeutsche Forschungsgemeinschaft, Excellence Cluster Engineering of Advanced Materials; Bavarian State Government, Solar Technologies go Hybrid initiative; MINECO, Spain [CTQ2017-85393-P]; Comunidad de Madrid (FOTOCARBON) [S2013/MIT-2841]; deutsche Forschungsgemeinschaft [SFB 953]
dc.description.sponsorshipThis work was supported by the deutsche Forschungsgemeinschaft as part of the Excellence Cluster Engineering of Advanced Materials and SFB 953 Synthetic Carbon Allotropes as well as by the Bavarian State Government as part of the Solar Technologies go Hybrid initiative. We are grateful for the financial support from the MINECO, Spain (CTQ2017-85393-P) and the Comunidad de Madrid (FOTOCARBON, S2013/MIT-2841).
dc.identifier.doi10.1039/c9nr02300c
dc.identifier.endpage10715
dc.identifier.issn2040-3364
dc.identifier.issn2040-3372
dc.identifier.issue22
dc.identifier.pmid31140533
dc.identifier.scopus2-s2.0-85067085186
dc.identifier.scopusqualityQ1
dc.identifier.startpage10709
dc.identifier.urihttps://doi.org/10.1039/c9nr02300c
dc.identifier.urihttps://hdl.handle.net/20.500.13099/1913
dc.identifier.volume11
dc.identifier.wosWOS:000470756000012
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherRoyal Soc Chemistry
dc.relation.ispartofNanoscale
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250316
dc.subjectSensitized Solar-Cells
dc.subjectLiquid-Phase Exfoliation
dc.subjectCharge-Transfer
dc.subjectAbsorbing Azulenocyanines
dc.subjectThin-Film
dc.subjectGraphite
dc.subjectPerformance
dc.subjectSingle
dc.subjectSpectroscopy
dc.subjectNoncovalent
dc.titleAzulenocyanines immobilized on graphene; on the way to panchromatic absorption and efficient DSSC blocking layers
dc.typeArticle

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