抄録
Drift mobilities of impurity ions in nematic liquid crystal cells have been estimated from a peak time in current transients measured by a voltage reversal method. A Monte-Carlo computer simulation has been carried out to show that the peak time is dependent on the frequency of the polarity-reversal voltage pulses and that the drift mobilities measured in this way are overestimated. A method is suggested to correctly measure both drift mobilities and diffusion constants of impurity ions by fitting computer-generated tramsients to experimentally obtained transients.
