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    Solvent additive effects on small molecule crystallization in bulk heterojunction solar cells probed during spin casting

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    Type
    Article
    Authors
    Pérez, Louis A.
    Chou, Kang Wei
    Love, John A.
    van der Poll, Thomas S.
    Smilgies, Detlef Matthias
    Nguyen, Thuc Quyen
    Krämer, Edward J.
    Amassian, Aram cc
    Bazan, Guillermo C. cc
    KAUST Department
    KAUST Solar Center (KSC)
    Material Science and Engineering Program
    Organic Electronics and Photovoltaics Group
    Physical Science and Engineering (PSE) Division
    Date
    2013-09-04
    Online Publication Date
    2013-09-04
    Print Publication Date
    2013-11
    Permanent link to this record
    http://hdl.handle.net/10754/562970
    
    Metadata
    Show full item record
    Abstract
    Solvent additive processing can lead to drastic improvements in the power conversion efficiency (PCE) in solution processable small molecule (SPSM) bulk heterojunction solar cells. In situ grazing incidence wide-angle X-ray scattering is used to investigate the kinetics of crystallite formation during and shortly after spin casting. The additive is shown to have a complex effect on structural evolution invoking polymorphism and enhanced crystalline quality of the donor SPSM. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
    Sponsors
    This work was supported as part of the Center for Energy Efficient Materials, an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Basic Energy Sciences under Award DC0001009 and by the Office of Collaborative Research Funds of the King Abdullah University of Science and Technology under the FIC and CRG programs. L.A.P. acknowledges support from the ConvEne IGERT Program (NSF-DGE 0801627) and a Graduate Research Fellowship from the National Science Foundation (GRFP). The time-resolved synchrotron work was conducted at beamline D1 at the Cornell High-Energy Synchrotron Source (CHESS), which is supported by the US National Science Foundation and the US National Institutes of Health/National Institute of General Medical Sciences under NSF award DMR-0936384. Portions of this research were carried out at the Stanford Synchrotron Radiation Lightsource, a Directorate of SLAC National Accelerator Laboratory and an Office of Science User Facility operated for the US Department of Energy Office of Science by Stanford University. T.Q.N. thanks the Camille Dreyfus Teacher Scholar Award and the Alfred Sloan Research Fellowship program.
    Publisher
    Wiley-VCH Verlag
    Journal
    Advanced Materials
    DOI
    10.1002/adma.201302389
    10.1002/adma.201370275
    PubMed ID
    24002890
    ae974a485f413a2113503eed53cd6c53
    10.1002/adma.201302389
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program; KAUST Solar Center (KSC)

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