CuInS2/N3 Co‐Sensitized ZnO Nanorods with Improved Photovoltaic Properties for Solar Cells
Uniform core/shell nanostructure of ZnO/CuInS2 nanorods was synthesized using ZnO nanorod arrays as reactive templates via solution reaction. The N3 dye was sequentially assembled on the ZnO/CuInS2
arrays to construct a cascading co‐sensitized nanomaterial as photoanode of solar cell. Formation process of CuInS2/ZnO nanostructure and the mechanism of CuInS2
and N3 co‐sensitization were discussed. The I–V characteristic measurement indicates an enhanced efficiency by 24.8% as compared to single sensitized by N3 due to abundant light harvesting, higher chemical instability of ZnO/CuInS2
in acid dye, fast injection and transmission velocity, and the slowdown recombination of photo‐excited electrons, simultaneously.