Activated transport in amorphous semiconductors. II. Interpretation of experimental data

For pt.I see ibid., vol.17, p.5337 (1984). The recently developed theory for the differential conductivity in a disordered system including the dynamical aspects of the electron-phonon interaction, is applied to various models of band tails in amorphous semiconductors. The results indicate, that this model of a spatially homogeneous system accounts for a large body of experimental data of DC transport properties of undoped and weakly doped samples, provided the slope parameter, T 0 , of the band tail is small and the electron-phonon coupling is not negligible.