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dc.contributor.authorAlbalawi, Ahmed
dc.contributor.authorKan, Zhipeng
dc.contributor.authorGorenflot, Julien
dc.contributor.authorGuarracino, Paola
dc.contributor.authorChaturvedi, Neha
dc.contributor.authorPrivitera, Alberto
dc.contributor.authorLiu, Shengjian
dc.contributor.authorGao, Yajun
dc.contributor.authorFranco, Lorenzo
dc.contributor.authorBeaujuge, Pierre
dc.contributor.authorLaquai, Frédéric
dc.date.accessioned2020-05-10T12:00:47Z
dc.date.available2020-05-10T12:00:47Z
dc.date.issued2020-04-28
dc.date.submitted2020-04-02
dc.identifier.citationBalawi, A. H., Kan, Z., Gorenflot, J., Guarracino, P., Chaturvedi, N., Privitera, A., … Laquai, F. (2020). Quantification of Photophysical Processes in All-Polymer Bulk Heterojunction Solar Cells. Solar RRL, 2000181. doi:10.1002/solr.202000181
dc.identifier.issn2367-198X
dc.identifier.doi10.1002/solr.202000181
dc.identifier.urihttp://hdl.handle.net/10754/662773
dc.description.abstractAll-polymer solar cells lag behind the state-of-the-art in small molecule nonfullerene acceptor (NFA) bulk heterojunction (BHJ) organic solar cells (OSCs) for reasons still unclear. Herein, the efficiency-limiting processes in all-polymer solar cells are investigated using blends of the common donor polymer PBDT-TS1 with different acceptor polymers, namely P2TPD[2F]T and P2TPDBT[2F]T. Combining data from steady-state optical spectroscopy and time-resolved photoluminescence, transient absorption, and time-delayed collection field experiments, provides not only a concise but also quantitative assessment of the losses due to limited photon absorption, geminate and nongeminate charge carrier recombination, field-dependent charge generation, and inefficient carrier extraction. Although both systems exhibit a similar charge separation efficiency in the absence of external bias, charge separation is significantly enhanced in P2TPDBT[2F]T-based blends when biased. Kinetic parameters obtained via pulsed laser spectroscopy are used to reproduce the experimentally measured device current–voltage (J–V) characteristics and indicate that low fill factors originate either from nongeminate recombination competing with charge extraction, or from a pronounced field dependence of charge generation, depending on the acceptor polymer. The methodology presented here is generic and can be used to quantify the loss processes in BHJ OSCs including both all-polymer and small molecule NFA systems.
dc.description.sponsorshipThis publication is based upon work supported by the King AbdullahUniversity of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No: OSR-2018-CARF/CCF-3079
dc.publisherWiley
dc.relation.urlhttps://onlinelibrary.wiley.com/doi/abs/10.1002/solr.202000181
dc.rightsArchived with thanks to Solar RRL
dc.titleQuantification of Photophysical Processes in All-Polymer Bulk Heterojunction Solar Cells
dc.typeArticle
dc.contributor.departmentAli I. Al-Naimi Petroleum Engineering Research Center (ANPERC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.identifier.journalSolar RRL
dc.eprint.versionPost-print
dc.contributor.institutionChongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, P. R. China
dc.contributor.institutionDepartment of Chemical Sciences, University of Padua, via Marzolo 1, 35131, Padua, Italy
dc.contributor.institutionSchool of Chemistry Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, Guangdong Provincial Engineering Technology Research Center for Materials for Energy Conversion and Storage, South China Normal University, Guanghzou, 510006, P. R. China
dc.identifier.pages2000181
kaust.personAlbalawi, Ahmed
kaust.personKan, Zhipeng
kaust.personGorenflot, Julien
kaust.personChaturvedi, Neha
kaust.personLiu, Shengjian
kaust.personGao, Yajun
kaust.personBeaujuge, Pierre
kaust.personLaquai, Frederic
kaust.grant.numberOSR-2018-CARF/CCF-3079
dc.date.accepted2020-04-14
dc.identifier.eid2-s2.0-85083988239
refterms.dateFOA2020-05-11T06:52:26Z
kaust.acknowledged.supportUnitCCF
kaust.acknowledged.supportUnitOSR
kaust.acknowledged.supportUnitSponsored Research
dc.date.published-online2020-04-28
dc.date.published-print2020-06


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