The photocapacitance property of Cu/Cu_2O/Au sandwich structures

摘要

We have carried out investigations into the photocapacitance property of domestically fabricated Cu/Cu_2O/Au sandwich structures. For the fabrication, p-type cuprous oxide (Cu_2O) was grown on a copper sheet, and a transparent gold metal contact was applied on the cuprous oxide layer under a pressure of 1×10~-6 Torr. The capacitance characteristics versus light intensity for different wavelengths in the visible region and the current-voltage characteristics of the sandwich structure were measured at a temperature of 15 deg. C.