Compensation temperature in molecularly doped polymers

The origin of the compensation temperature T0, at which the mobility of holes 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. Compensation 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 T0 at low doping, as found in dilute systems.