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Coumarin dye with ethynyl group as p-spacer unit for dye sensitized solar cells

2015Journal article Open access
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dc.contributor.authorTorres, Erica
dc.contributor.authorSequeira, S.
dc.contributor.authorParreira, P.
dc.contributor.authorMendes, Paulo
dc.contributor.authorSilva, Tiago J. L.
dc.contributor.authorLobato, Killian
dc.contributor.authorBrites, Maria João
dc.date.accessioned2016-03-22T12:28:09Z
dc.date.available2016-03-22T12:28:09Z
dc.date.issued2015
dc.description.abstractC1-LEN coumarin dye, containing an ethynyl conjugated bridge was tested as a new chromophore for dye-sensitized solar cells (DSSCs). Investigation on the relationship of dye structure, optical properties, electrochemical properties and performance of DSSCs is described. The C1-LEN-sensitized solar cells showed an overall conversion efficiency of 2.2% (JSC = 6.11 mA/cm2, VOC = 547 mV, FF = 0.66), which corresponds to 68% of N719-based device efficiency, fabricated under similar conditions. Electrochemical impedance spectroscopy (EIS) analysis reveals that charge recombination at the nanocrystalline TiO2/dye/redox electrolyte interface is similar for C1-LEN and N719 sensitized solar cells, i.e., charge recombination is not the factor limiting the performance of C1-LEN device.pt_PT
dc.identifier.citationTorres, E.; Sequeira, S.; Parreira, P.; [et.al.]. - Coumarin dye with ethynyl group as p-spacer unit for dye sensitized solar cells. In: Journal of Photochemistry and Photobiology A: Chemistry, 2015, Vol. 310, p. 1-8pt_PT
dc.identifier.doi10.1016/j.jphotochem.2015.05.017pt_PT
dc.identifier.issn1010-6030
dc.identifier.urihttp://hdl.handle.net/10400.9/2894
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.jphotochem.2015.05.017pt_PT
dc.subjectSolar cellspt_PT
dc.subjectDyespt_PT
dc.subjectAlkyne bridge pt_PT
dc.subjectElectrochemical impedance spectroscopypt_PT
dc.subjectCoumarinpt_PT
dc.titleCoumarin dye with ethynyl group as p-spacer unit for dye sensitized solar cellspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage8pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleJournal of Photochemistry and Photobiology A: Chemistrypt_PT
oaire.citation.volume310pt_PT
person.familyNameSilva
person.familyNameBrites
person.givenNameTiago
person.givenNameMaria João de Sousa
person.identifier.ciencia-id6710-13F6-3011
person.identifier.orcid0000-0003-0390-0525
person.identifier.orcid0000-0002-1081-7191
person.identifier.ridN-6508-2013
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication0ff899f4-e2c1-470f-9b1a-474467671f60
relation.isAuthorOfPublicationafcf1d4c-fc7e-4486-b0f4-58f27acc6834
relation.isAuthorOfPublication.latestForDiscoveryafcf1d4c-fc7e-4486-b0f4-58f27acc6834

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