Justin M. Hodgkiss, Sebastian Albert-Seifried, Akshay Rao, Alex J. Barker, Andrew R. Campbell, R. Alex Marsh and Richard H. Friend Exciton-Charge Annihilation in Organic Semiconductor Films Advanced Functional Materials 22
Time-resolved optical spectroscopy is used to probe exciton-charge annihilation reactions in organic semiconductor films. A strong effect due to the optical resonance between singlet excitons and charges is found. The pronounced morphology and excitation density dependence of exciton-charge annihilation described has important implications for the application of time-resolved spectroscopy to organic photovoltaic blends.
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