Please use this identifier to cite or link to this item: http://hdl.handle.net/10216/103662
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dc.creatorRui Cruz
dc.creatorDavid Alfredo Pacheco Tanaka
dc.creatorAdélio Mendes
dc.date.accessioned2018-12-06T00:31:56Z-
dc.date.available2018-12-06T00:31:56Z-
dc.date.issued2012
dc.identifier.issn0038-092X
dc.identifier.othersigarra:68654
dc.identifier.urihttp://hdl.handle.net/10216/103662-
dc.description.abstractStand-alone graphene-based films were prepared from graphene oxide (GO) nanoplatelets and their use as counter-electrodes (CEs) indye-sensitized solar cells (DSCs) was investigated. The graphene-based CEs were produced by spray deposition of GO and chemicallyreduced GO, followed by thermal annealing under an inert atmosphere. These GO-based CEs were shown to have similar transparencyas a reference CE made of Pt. Consistent with impedance data from symmetrical half-cells, DSCs assembled with such GO-based CEsexhibited relative efficiencies of ca. 75% comparatively to the reference Pt CE. The possibility of obtaining transparent (transmittancehigher than 80%) and reasonable catalytic films for DSCs (energy conversion efficiency of 2.64%) from GO nanoplatelets was demonstrated.The need for reduction of the graphene oxide nanoplatelets prior to deposition was not observed, allowing for a simplified CEmanufacturing process. However, further work is still needed to equal or surpass the performance of Pt CEs.
dc.language.isoeng
dc.relationinfo:eu-repo/grantAgreement/Agência de Inovação, S.A./Projectos de I&DT em Co-Promoção/SI IDT - 3423/2008/Desenvolvimento de um sistema inovador de selagem e montagem de DSC/SolarSel
dc.rightsrestrictedAccess
dc.subjectEngenharia química
dc.subjectChemical engineering
dc.titleReduced graphene oxide films as transparent counter-electrodes for dye-sensitized solar cells
dc.typeArtigo em Revista Científica Internacional
dc.contributor.uportoFaculdade de Engenharia
dc.identifier.doi10.1016/j.solener.2011.11.010
dc.subject.fosCiências da engenharia e tecnologias::Engenharia química
dc.subject.fosEngineering and technology::Chemical engineering
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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