The theory of anomalous carrier pulse propagation in amorphous semiconductors

Abstract

A simple derivation is given of a macroscopic conservation equation for carriers obeying rate equations and Boltzmann statistics, which hop between sites having both random positions and random energies. The macroscopic conservation equation is identical to that used previously bythe authors to determine the salient features of anomalous carrier pulse propagation. It involves the a.c. mobility and embodies the Einstein relation. These conclusions are contrary to those obtained by some other authors and the reasons for this are discussed.