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dc.contributor.authorLaquai, Frédéric
dc.contributor.authorAndrienko, Denis
dc.contributor.authorMauer, Ralf
dc.contributor.authorBlom, Paul W. M.
dc.date.accessioned2015-05-17T20:37:23Z
dc.date.available2015-05-17T20:37:23Z
dc.date.issued2015-05-03
dc.identifier.citationCharge Carrier Transport and Photogeneration in P3HT:PCBM Photovoltaic Blends 2015:n/a Macromolecular Rapid Communications
dc.identifier.issn10221336
dc.identifier.doi10.1002/marc.201500047
dc.identifier.urihttp://hdl.handle.net/10754/553016
dc.description.abstractThis article reviews the charge transport and photogeneration in bulk-heterojunction solar cells made from blend films of regioregular poly(3-hexylthiophene) (RR-P3HT) and methano­fullerene (PCBM). The charge transport, specifically the hole mobility in the RR-P3HT phase of the polymer:fullerene photovoltaic blend, is dramatically affected by thermal annealing. The hole mobility increases more than three orders of magnitude and reaches a value of up to 2 × 10−4 cm2 V−1 s−1 after the thermal annealing process as a result of an improved semi-crystallinity of the film. This significant increase of the hole mobility balances the electron and hole mobilities in a photovoltaic blend in turn reducing space-charge formation, and this is the most important factor for the strong enhancement of the photovoltaic efficiency compared to an as cast, that is, non-annealed device. In fact, the balanced charge carrier mobility in RR-P3HT:PCBM blends in combination with a field- and temperature-independent charge carrier generation and greatly reduced non-geminate recombination explains the large quantum efficiencies mea­sured in P3HT:PCBM photovoltaic devices.
dc.publisherWiley-Blackwell
dc.relation.urlhttp://doi.wiley.com/10.1002/marc.201500047
dc.rightsThis is the peer reviewed version of the following article: Laquai, F., Andrienko, D., Mauer, R. and Blom, P. W. M. (2015), Charge Carrier Transport and Photogeneration in P3HT:PCBM Photovoltaic Blends. Macromol. Rapid Commun.. doi: 10.1002/marc.201500047, which has been published in final form at http://doi.wiley.com/10.1002/marc.201500047. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
dc.subjectpoly(3-hexylthiophene)
dc.subjectcharge recombination
dc.subjectcharge transport
dc.subjectDFT calculations
dc.subjectorganic solar cells
dc.titleCharge Carrier Transport and Photogeneration in P3HT:PCBM Photovoltaic Blends
dc.typeArticle
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterials Science and Engineering Program
dc.identifier.journalMacromolecular Rapid Communications
dc.eprint.versionPost-print
dc.contributor.institutionMax Planck Institute for Polymer Research; Ackermannweg 10 D-55122 Mainz Germany
dc.contributor.institutionMax Planck Institute for Polymer Research; Ackermannweg 10 D-55122 Mainz Germany
dc.contributor.institutionMax Planck Institute for Polymer Research; Ackermannweg 10 D-55122 Mainz Germany
dc.contributor.institutionMax Planck Institute for Polymer Research; Ackermannweg 10 D-55122 Mainz Germany
dc.contributor.institutionInnovationLab GmbH, Speyerer Straße 4, 69115 Heidelberg, Germany
kaust.personLaquai, Frédéric
refterms.dateFOA2016-05-03T00:00:00Z


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