Monte-Carlo study of drift mobility in ultrathin organic layers: Miller-Abrahams and Marcus models

Abstract

It is shown by the means of Monte-Carlo modeling that the drift mobility decreases considerably along with the increasing of the layer thickness from 10 to 100 nm, if the hopping rates are calculated in the framework of the Marcus model, according to approximately the same low, as in the case of the Miller-Abrahams model. The diffusion current can contribute approximately the same contribution, as an energetic relaxation of the generated non-equilibrium charge carriers, for the case of moderate disorder.