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    Modeling the efficiency of Förster resonant energy transfer from energy relay dyes in dye-sensitized solar cells

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    Type
    Article
    Authors
    Hoke, Eric T.
    Hardin, Brian E.
    McGehee, Michael D.
    Date
    2010-02-11
    Online Publication Date
    2010-02-11
    Print Publication Date
    2010-02-15
    Permanent link to this record
    http://hdl.handle.net/10754/598862
    
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    Abstract
    Förster resonant energy transfer can improve the spectral breadth, absorption and energy conversion efficiency of dye sensitized solar cells. In this design, unattached relay dyes absorb the high energy photons and transfer the excitation to sensitizing dye molecules by Förster resonant energy transfer. We use an analytic theory to calculate the excitation transfer efficiency from the relay dye to the sensitizing dye accounting for dynamic quenching and relay dye diffusion. We present calculations for pores of cylindrical and spherical geometry and examine the effects of the Förster radius, the pore size, sensitizing dye surface concentration, collisional quenching rate, and relay dye lifetime. We find that the excitation transfer efficiency can easily exceed 90% for appropriately chosen dyes and propose two different strategies for selecting dyes to achieve record power conversion efficiencies. © 2010 Optical Society of America.
    Citation
    Hoke ET, Hardin BE, McGehee MD (2010) Modeling the efficiency of Förster resonant energy transfer from energy relay dyes in dye-sensitized solar cells. Optics Express 18: 3893. Available: http://dx.doi.org/10.1364/oe.18.003893.
    Sponsors
    This work was supported by the King Abdullah University of Science and Technology Center for Advanced Molecular Photovoltaics and the Office of Naval Research contract no. N00014-08-1-1163. E.T.H. was supported by the National Science Foundation GRFP and the Fannie and John Hertz Foundation.
    Publisher
    The Optical Society
    Journal
    Optics Express
    DOI
    10.1364/oe.18.003893
    PubMed ID
    20389400
    ae974a485f413a2113503eed53cd6c53
    10.1364/oe.18.003893
    Scopus Count
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