AbstractMonte Carlo simulation for percolative hopping transport has been carried out to explain the increase in transit‐time dispersion and decrease in drift mobility with increasing applied electric field, found in molecularly doped polymers with low concentrations of charge transporting molecules. These two phenomena cannot be understood in terms of the Gaussian disorder model (GDM), which has been widely accepted for the analysis of the transport data of molecularly doped polymers. It is found that the two phenomena are successfully explained by the present computer simulation. The GDM analysis is applied to the analysis of the simulation data, and it is shown that energetic disorder can be estimated from the GDM analysis even in the case of percolative hopping transport and that the percolative motion of hopping carriers is one of the origins of geometrical disorder. © 2002 Wiley Periodicals, Inc. Electr Eng Jpn, 140(2): 1–9, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.10014
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