Photocurrent characteristics in Cu2O/Pt and Cu2O/TiO2 photoelectrochemical cells in aqueous and non-aqueous electrolytes
Abstract
Photocurrent characteristics of the Cu2O/Pt and Cu2O/TiO2 photoelectro-chemical cells have been presented. In aqueous solution, a slow deterioration of power output occurs approximately at the rate of 50% per day. Operation in non-aqueous solutions (acetonitrile and ethanol) also produced a deterioration of power output. However in ethanol, it was found that the deterioration reversed itself and a new cycle of deterioration and rejuvenation began. These suggest that the deterioration is not due to a chemical reduction process at the electrode surface but other factors such as migration of charged defect centres in the depletion layer or chemical reaction on the electrode surface.
- Publication:
-
Pramana
- Pub Date:
- March 1986
- DOI:
- 10.1007/BF02845268
- Bibcode:
- 1986Prama..26..277K
- Keywords:
-
- Photocurrent;
- photoelectrochemical cell;
- aqueous electrolyte;
- non-aqueous electrolyte