The effect of humidity on electronic conductivity of an Au/CuO/Cu2O/Cu sandwich structure

In this study it was aimed to research the effect of humidity on the current-voltage characteristics and capacitance of an Au/CuO/Cu2 O/Cu sandwich structure. Cuprous oxide (Cu2 O) and cupric oxide (CuO) layers were grown on a copper sheet. In order to complete the fabrication of the Au/CuO/Cu2 O/Cu sandwich structure a gold metal contact was then applied on the cupric oxide layer under the pressure of 1 × 10-6 Torr. The current-voltage characteristics and effective capacitance of the sandwich structure were measured in various humidity ranges at a temperature 20 °C. It was observed that the electronic conduction and capacitance of the Au/CuO/Cu2 O/Cu structure were strongly dependent on humidity. The effect of humidity in Au/CuO/Cu2 O/Cu was discussed by means of the electric dipole moment of water.