Charge-Carrier Drift Mobilities and Phase Transition in Tetrakis(octylthio)tetrathiafulvalene, TTC8–TTF, Crystal

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Abstract
Temperature dependence of the charge-carrier mobility in tetrakis(octylthio)tetrathiafulvalene crystals has been observed in the temperature range of −100–45°C by the time-of-flight measurement of transient photocarriers. The mobility shows a clear jump at the crystal phase transition which is found in the electrical conductivity measurement. This fact may lead a quantitative analysis of the correlation between the conductivity jump and the phase transition.