A complete model for electrical behaviour of single carrier organic diodes in the presence of a field-dependent mobility

In this paper we propose a model to simulate electrical conduction of single carrier organic diodes in the presence of a barrier for carrier injection, and considering a field-dependent carrier mobility. An analytical expression for the internal electric field function, that simplifies operation with the resulting non-linear equation system, is provided. The results of the model are compared with those from other existing approaches that assume simplifications. Finally, the current density versus voltage curves predicted by this model for diodes with different active layer thicknesses show a good agreement with the experimental results.