Hole transport in tri-p-tolylamine-doped bisphenol-A-polycarbonate

Hole mobilities of binary solid solutions of tri-p-tolylamine and bisphenol-A-polycarbonate have been measured as functions of electric field and temperature for concentrations between 6% and 50% tri-p-tolylamine. The mobilities can be described by an exponential dependence on the square root of the electric field and a temperature-dependent activation energy. The results are discussed within the framework of a model involving hopping within a Gaussian distribution-of-states broadened by disorder.