Improving performance and stability in quantum dot-sensitized solar cell through single layer graphene/Cu2S nanocomposite counter electrode

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buir.contributor.authorMutlugün, Evren
dc.citation.epage2200en_US
dc.citation.spage2192en_US
dc.citation.volumeNumber145en_US
dc.contributor.authorAkman, E.
dc.contributor.authorAltıntaş, Y.
dc.contributor.authorGülen, M.
dc.contributor.authorYılmaz, M.
dc.contributor.authorMutlugün, Evren
dc.contributor.authorSönmezoğlu, S.
dc.date.accessioned2021-03-05T07:51:37Z
dc.date.available2021-03-05T07:51:37Z
dc.date.issued2020
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractIn this work, we presented an effective nanocomposite to modify the Cu2S film by employing single layer graphene (SLG) frameworks via chemical vapor deposition, and utilized this nanocomposite as counter electrode (CE) with CdSe/ZnS core/shell quantum dots for highly stable and efficient quantum dot-sensitized solar cell (QDSSC). Furthermore, Cu2S film is directly synthesized on SLG framework by electrodeposition method. Using this nanocomposite as CE, we have achieved the high efficiency as high as 3.93% with fill factor of 0.63, which is higher than those with bare Cu2S CE (3.40% and 0.57). This remarkable performance is attributed to the surface area enhancement by creating nanoflower-shape, the reduction of charge transfer resistance, improvement of catalytic stability, and the surface smoothness as well as good adhesion. More importantly, no visible color change and detachment from surface for the Cu2S@SLG nanocomposite was observed, demonstrating that the SLG framework is critical role in shielding the Cu2S structure from sulphur ions into electrolyte, and increasing the adhesion of the Cu2S structure on surface, thus preventing its degradation. Consequently, the Cu2S@SLG nanocomposite can be utilized as an effective agent to boost up the performance of QDSSCs.en_US
dc.embargo.release2022-01-01
dc.identifier.doi10.1016/j.renene.2019.07.150en_US
dc.identifier.issn0960-1481
dc.identifier.urihttp://hdl.handle.net/11693/75820
dc.language.isoEnglishen_US
dc.publisherElsevieren_US
dc.relation.isversionofhttps://dx.doi.org/10.1016/j.renene.2019.07.150en_US
dc.source.titleRenewable Energyen_US
dc.subjectQuantum-dot sensitized solar cell (QDSSC)en_US
dc.subjectSingle layer graphene and Cu2S filmen_US
dc.subjectCounter electrodeen_US
dc.subjectElectrodeposition methoden_US
dc.subjectChemical vapor depositionen_US
dc.titleImproving performance and stability in quantum dot-sensitized solar cell through single layer graphene/Cu2S nanocomposite counter electrodeen_US
dc.typeArticleen_US

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Institute of Materials Science and Nanotechnology (UNAM)