Design and characterization of ZnO/NiO and ZnO/CuO heterostructures for high-performance solar cell applications

Metal-oxide-based heterojunction solar cells have received burgeoning research interests owing to the prospect of high efficiency, low cost, and environmental benignity. Of all the systems, ZnO heterojunctions with either NiO or CuO have received much interest for next generation photovoltaic devices. This review summarizes the material properties, fabrication methods, interface characteristics, and photovoltaic performances of ZnO/NiO and ZnO/CuO heterojunctions in a comprehensive comparison ma