Mobility and Dynamics of Charge Carriers in Rubrene Single Crystals Studied by Flash-Photolysis Microwave Conductivity and Optical Spectroscopy


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The optoelectronic properties of single-crystal rubrene are investigated by microwave and optical spectroscopy, demonstrating the anisotropy, ambipolarity, and dynamics of the charge carriers. They are discussed in terms of charge recombination, exciton-exciton annihilation, quantum efficiency, triplet contribution, the extinction coefficient of radical cations/anions, and density functional theory.