Abstract
The current-voltage characteristic of a thin organic layer located between conductive electrodes is analytically modeled. To this end, a theoretical model is developed which considers not only the interaction of an injected carrier with its mirror charge “reflected” in the nearest electrode, but also the effect of multiple reflections and the injection current from the opposite electrode. The current-voltage characteristics at various temperatures and barrier heights are compared to the model previously developed by Arkhipov et al. The limits of applicability of this model are determined. At low temperatures and voltages, the effect of multiple reflections becomes significant, which cause an increase in the current. These results should be considered when testing individual thin layers constituting multilayer organic light-emitting diodes.
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