All-oxide heterojunction solar cells formed by magnetron sputtering

All-oxide solar cells based on ZnO/Cu₂O heterostructure were grown by the magnetron sputtering deposition at elevated temperatures. An effect of ZnO and Cu₂O films thickness on the solar cells characteristics was demonstrated. The open circuit voltage of 315 mV and the density of a short-circuit current of 0.5 mA/cm² under AM1.5 illumination were measured for optimized ZnO/Cu₂O based solar cell. (paper)