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dc.contributor.authorItskos, Grigoriosen
dc.contributor.authorOthonos, Andreas S.en
dc.contributor.authorRauch, T.en
dc.contributor.authorTedde, S. F.en
dc.contributor.authorHayden, O.en
dc.contributor.authorKovalenko, M. V.en
dc.contributor.authorHeiss, W.en
dc.contributor.authorChoulis, Stelios A.en
dc.creatorItskos, Grigoriosen
dc.creatorOthonos, Andreas S.en
dc.creatorRauch, T.en
dc.creatorTedde, S. F.en
dc.creatorHayden, O.en
dc.creatorKovalenko, M. V.en
dc.creatorHeiss, W.en
dc.creatorChoulis, Stelios A.en
dc.date.accessioned2019-12-02T15:30:37Z
dc.date.available2019-12-02T15:30:37Z
dc.date.issued2011
dc.identifier.issn1614-6832
dc.identifier.urihttp://gnosis.library.ucy.ac.cy/handle/7/58746
dc.description.abstractWe report an optical investigation of conjugated polymer (P3HT)/fullerene (PCBM) semiconductor blends sensitized by near-infrared absorbing quantum dots (PbS QDs). A systematic series of samples that include pristine, binary and ternary blends of the materials are studied using steadystate absorption, photoluminescence (PL) and ultrafast transient absorption. Measurements show an enhancement of the absorption strength in the near-infrared upon QD incorporation. PL quenching of the polymer and the QD exciton emission is observed and predominantly attributed to intermaterial photoinduced charge transfer processes. Pump-probe experiments show photo-excitations to relax via an initial ultrafast decay while longer-lived photoinduced absorption is attributed to charge transfer exciton formation and found to depend on the relative ratio of QDs to P3HT:PCBM content. PL experiments and transient absorption measurements indicate that interfacial charge transfer processes occur more efficiently at the fullerene/polymer and fullerene/nanocrystal interfaces compared to polymer/nanocrystal interfaces. Thus the inclusion of the fullerene seems to facilitate exciton dissociation in such blends. The study discusses important and rather unexplored aspects of exciton recombination and charge transfer processes in ternary blend composites of organic semiconductors and near-infrared quantum dots for applications in solution-processed photodetectors and solar cells. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.en
dc.sourceAdvanced Energy Materialsen
dc.source.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84859790434&doi=10.1002%2faenm.201100182&partnerID=40&md5=0ed8b1448fb39fb6e8c8d051cb6e319b
dc.subjectOptical propertiesen
dc.subjectExperimentsen
dc.subjectCharge transferen
dc.subjectUltra-fasten
dc.subjectTransient absorptionen
dc.subjectSemiconductor quantum dotsen
dc.subjectExcitonsen
dc.subjectNear Infrareden
dc.subjectFullerenesen
dc.subjectCharge transfer excitonsen
dc.subjectPhotoinduced absorptionen
dc.subjectSolution-processeden
dc.subjectInfrared devicesen
dc.subjectSemiconducting organic compoundsen
dc.subjectAbsorption strengthen
dc.subjectCharge transfer processen
dc.subjectExciton dissociationen
dc.subjectExciton emissionen
dc.subjectExciton recombinationen
dc.subjectInterfacial charge transferen
dc.subjectLight-harvestingen
dc.subjectOptical investigationen
dc.subjectOrganic semiconductor blendsen
dc.subjectPhoto-excitationsen
dc.subjectPhotoinduced charge transferen
dc.subjectPump-probe experimentsen
dc.subjectRelative ratiosen
dc.subjectSteady-state absorptionen
dc.subjectTernary blendsen
dc.subjectTransient absorption measurementsen
dc.subjectUltrafast decayen
dc.titleOptical properties of organic semiconductor blends with near-infrared quantum-dot sensitizers for light harvesting applicationsen
dc.typeinfo:eu-repo/semantics/article
dc.identifier.doi10.1002/aenm.201100182
dc.description.volume1
dc.description.issue5
dc.description.startingpage802
dc.description.endingpage812
dc.author.facultyΣχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences
dc.author.departmentΤμήμα Φυσικής / Department of Physics
dc.type.uhtypeArticleen
dc.description.notes<p>Cited By :56</p>en
dc.source.abbreviationAdv.Energy Mater.en
dc.contributor.orcidItskos, Grigorios [0000-0003-3971-3801]
dc.contributor.orcidOthonos, Andreas S. [0000-0003-0016-9116]
dc.contributor.orcidChoulis, Stelios A. [0000-0002-7899-6296]
dc.gnosis.orcid0000-0003-3971-3801
dc.gnosis.orcid0000-0003-0016-9116
dc.gnosis.orcid0000-0002-7899-6296


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