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dc.contributor.authorBi, Yu
dc.contributor.authorPradhan, Santanu
dc.contributor.authorAkgul, Mehmet Zafer
dc.contributor.authorGupta, Shuchi
dc.contributor.authorStavrinadis, Alexandros
dc.contributor.authorWang, Jianjun
dc.contributor.authorKonstantatos, Gerasimos
dc.contributor.otherUniversitat Politècnica de Catalunya. Institut de Ciències Fotòniques
dc.date.accessioned2018-09-26T09:37:35Z
dc.date.available2019-06-28T02:30:21Z
dc.date.issued2018-06-28
dc.identifier.citationBi, Y. [et al.]. Colloidal Quantum Dot Tandem Solar Cells Using CVD Graphene as An Atomically Thin Intermediate Recombination Layer. "ACS Energy Letters", 28 Juny 2018, vol. 3, núm. 7, p. 1753-1759.
dc.identifier.issn2380-8195
dc.identifier.urihttp://hdl.handle.net/2117/121512
dc.description.abstractTwo-terminal tandem cell architectures are believed to be an effective way to further improve the power conversion efficiency in solution processed photovoltaics. To design an efficient tandem solar cell, two key issues need to be considered. First, subcells with well-matched currents and complementary absorption characteristics are a prerequisite for high efficiency. Second, identifying the appropriate intermediate layer (IML) to connect the subcells is necessary to minimize the optical and electronic losses. PbS colloidal quantum dots (CQDs) are a notable choice for the subcells due to their low cost, solution processability, and remarkable wide range band gap tunability. Single-layer graphene (Gr) has been proposed to be a promising IML due to its high transparency and conductivity. Here, as a proof of concept, we demonstrate a solution-processed, two-terminal PbS CQDs tandem solar cell employing chemical vapor deposited Gr as the IML. In doing so, we report a PbS CQD cell comprising subcells with bandgaps of 1.4 and 0.95 eV that delivers power conversion efficiency in excess of 7%, substantially higher than that of previously reported CQD tandem cells.
dc.format.extent7 p.
dc.language.isoeng
dc.publisherACS
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshGraphene
dc.subject.othergrafè
dc.titleColloidal Quantum Dot Tandem Solar Cells Using CVD Graphene as An Atomically Thin Intermediate Recombination Layer
dc.typeArticle
dc.subject.lemacGrafè
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://pubs.acs.org/doi/abs/10.1021/acsenergylett.8b00675
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
dc.relation.projectid696656
dc.relation.projectidSEV-2015-0522
upcommons.citation.publishedtrue
upcommons.citation.publicationNameACS Energy Letters
upcommons.citation.volume3
upcommons.citation.number7
upcommons.citation.startingPage1753
upcommons.citation.endingPage1759


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Except where otherwise noted, content on this work is licensed under a Creative Commons license: Attribution-NonCommercial-NoDerivs 3.0 Spain