Abstract
We have studied the effect of an electric field on the transient behaviour of localized carriers in quasi-one dimensional (QOD) systems. We assume that the localized states have an exponential form of the density of states in band tails. The localized states are distributed randomly in both space and energy coordinates and the hopping of the carriers occurs in both coordinates. The critical hopping range, the time dependent hopping mobility and the demarcation energy are calculated in the activated and the non activated regimes. Our expressions for the mobility and the demarcation energy are reduced to the expressions given in the literature. Numerical calculations are performed for the demarcation energy and the mobility as a function of an electric field and time. It is found that the electric field has dominant contribution at low temperatures.
Published Version
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