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13 September 2012 Energy transfer and excitation migration in organic semiconductors
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Energy transfer plays a key role in various applications of organic semiconductors such as electroluminescence, photovoltaics, and sensors. We have carried out a study combining transient and continuous wave (CW) optical spectroscopy with modeling. The fluorescence spectra and dynamics of a functionalized pentacene doped into a fluorescent host (Alq3) were measured and simulated by a Monte Carlo model incorporating distributed dopants and exciton migration. For nonluminescent materials, transient absorption spectroscopy provides insight into excitation migration. Singlet diffusion rates in C60 were determined by probing delayed charge transfer to ZnPc in films with a layered nanostructure.
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Paul A. Lane, Mason A. Wolak, Paul D. Cunningham, and Joseph S. Melinger "Energy transfer and excitation migration in organic semiconductors", Proc. SPIE 8476, Organic Light Emitting Materials and Devices XVI, 84760I (13 September 2012);

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