A theoretical study of the performance of a CuPc/V2O5/CuPc vertical triode by using numerical simulations

Abstract

In this work, a vertical triode consisting of an organic material CuPc and a metal oxide V2O5, was studied by using numerical simulations. The electrical characteristics of the triodes with V2O5 doping concentrations of 10 16 − 10 18 cm −3 and electrode work functions (WFs) of 4.4 − 5.1 eV were simulated. In addition, the corresponding physical mechanisms were investigated by quantitatively analyzing the energy band diagram, carrier distribution, injection and transports which were difficult to measure and obtain experimentally. The optimal triode performance was obtained for a doping concentration of V2O5 of 2 × 10 17 cm −3 and WFs of the emitter and the collector electrodes of 5.1 eV and 4.8 eV, respectively. The simulation results were reasonable when compared with experimental data reported by other groups.