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dc.contributor.authorGhosh, Sanjay Sanatan
dc.contributor.authorSerrano, Luis A.
dc.contributor.authorEbenhoch, Bernd
dc.contributor.authorRotello, Vince
dc.contributor.authorCooke, Graeme
dc.contributor.authorSamuel, Ifor David William
dc.identifier.citationGhosh , S S , Serrano , L A , Ebenhoch , B , Rotello , V , Cooke , G & Samuel , I D W 2015 , ' Organic solar cells based on acceptor-functionalized diketopyrrolopyrrole derivatives ' , Journal of Photonics for Energy , vol. 5 , no. 1 , 057215 .
dc.identifier.otherPURE: 185963218
dc.identifier.otherPURE UUID: c365f14d-b7a1-48f5-8d0b-4fa310c708b1
dc.identifier.otherScopus: 84935859541
dc.identifier.otherWOS: 000358010100001
dc.descriptionThis work was supported by the EPSRC (grants EP/E036244 and EP/I00343X).en
dc.description.abstractThe synthesis and characterization of three solution processable diketopyrrolopyrrole (DPP) derivatives featuring acceptor units attached to the core by alkyne linker units is reported. Cyclic voltammetry and DFT calculations indicate that the DPP derivatives possess similar HOMO and LUMO energies. Solar cells were fabricated by blending the synthesised DPP derivatives with PC71BM. The influence of donor:acceptor blend ratio, film thickness, annealing temperature and annealing time on device performance was studied. Differences in device performance were related to atomic force microscopy measurements of the films. The highest power conversion efficiency of 1.76% was achieved for the DPP derivative functionalized with an aldehyde electron withdrawing group with 1:0.7 donor:acceptor ratio when active layer was annealed for 10 minutes at 110 oC.
dc.relation.ispartofJournal of Photonics for Energyen
dc.rights© The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.en
dc.subjectSmall moleculeen
dc.subjectSolar cellen
dc.subjectQC Physicsen
dc.titleOrganic solar cells based on acceptor-functionalized diketopyrrolopyrrole derivativesen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Condensed Matter Physicsen
dc.description.statusPeer revieweden

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