The determination of charge carrier mobility from the current transients in organic field effect transistor

In this paper, we present features of current transients in organic field effect transistors obtained by the computer simulation and experimentally. We analyse the influence of the charge carrier reservoir at the organic semiconductor-insulator interface and the load resistance on the current transients. We demonstrate how to determine the amount of charge carriers in the reservoir and how to take it into account when calculating the mobility values estimated from current transients. Such correction reduces the estimated mobility values and changes mobility dependence on the electric field.