An attempt has been made to stabilize the photocurrent in a photoelectrochemical cell by depositing thin Au and SiO films onto the Cu2O photoelectrode. In case of Au deposition, the photocurrent was either quenched or reduced. This may be the cause of insufficient formation of surface states in...

The photoresponse of a p-type Cu2O film on copper is presented. The current-voltage characteristics exhibit a large photocurrent with an onset potential at ca. −0.2 V (S.C.E.). The electrode in the Cu2O/Pt biased cell shows high quantum efficiency which is approaching 100% for wavelength λ...