Compensation temperature in molecularly doped polymers

The origin of the compensation temperature T-0, at which the mobility of ho les in molecularly doped polymers becomes field-independent, is related to competition between positional or orientational disorder, which are treated explicitly, and energetic disorder, which is assumed to be Gaussian. Compe nsation is shown to occur for hopping rates with different intrinsic field dependencies by considering the strong-disorder limit. Mobility simulations with Marcus rates indicate low T-0 at low doping, as found in dilute syste ms. (C) 2000 Elsevier Science B.V. All rights reserved.