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    Solution-Processed Organic Solar Cells from Dye Molecules: An Investigation of Diketopyrrolopyrrole:Vinazene Heterojunctions

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    Type
    Article
    Authors
    Walker, Bright
    Han, Xu
    Kim, Chunki
    Sellinger, Alan cc
    Nguyen, Thuc-Quyen
    Date
    2012-01-13
    Online Publication Date
    2012-01-13
    Print Publication Date
    2012-01-25
    Permanent link to this record
    http://hdl.handle.net/10754/599667
    
    Metadata
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    Abstract
    Although one of the most attractive aspects of organic solar cells is their low cost and ease of fabrication, the active materials incorporated into the vast majority of reported bulk heterojunction (BHJ) solar cells include a semiconducting polymer and a fullerene derivative, classes of materials which are both typically difficult and expensive to prepare. In this study, we demonstrate that effective BHJs can be fabricated from two easily synthesized dye molecules. Solar cells incorporating a diketopyrrolopyrrole (DPP)-based molecule as a donor and a dicyanoimidazole (Vinazene) acceptor function as an active layer in BHJ solar cells, producing relatively high open circuit voltages and power conversion efficiencies (PCEs) up to 1.1%. Atomic force microscope images of the films show that active layers are rough and apparently have large donor and acceptor domains on the surface, whereas photoluminescence of the blends is incompletely quenched, suggesting that higher PCEs might be obtained if the morphology could be improved to yield smaller domain sizes and a larger interfacial area between donor and acceptor phases. © 2011 American Chemical Society.
    Citation
    Walker B, Han X, Kim C, Sellinger A, Nguyen T-Q (2012) Solution-Processed Organic Solar Cells from Dye Molecules: An Investigation of Diketopyrrolopyrrole:Vinazene Heterojunctions. ACS Applied Materials & Interfaces 4: 244–250. Available: http://dx.doi.org/10.1021/am201304e.
    Sponsors
    B.W. thanks the NSF ConvEne IGERT program for financial support. C.K. is supported by the Office of Naval Research. T.QN. thanks the Camille Dreyfus Teacher-Scholar Awards and the Alfred P. Sloan Foundation program for the financial support. X.H. and A.S. acknowledge that this publication was partially based on work supported by the Center for Advanced Molecular Photovoltaics (CAMP) (Award KUS-C1-015-21), made by King Abdullah University of Science and Technology (KAUST).
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Applied Materials & Interfaces
    DOI
    10.1021/am201304e
    PubMed ID
    22136108
    ae974a485f413a2113503eed53cd6c53
    10.1021/am201304e
    Scopus Count
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