Complete surface coverage of ZnO nanorod arrays by pulsed electrodeposited CuInS2 for visible light energy conversion

Abstract

Well-aligned ZnO nanorods were uniformly coated with a layer of CuInS₂ nanoparticle photosensitizers using a tailored sequential pulsed electrodeposition. The formation of CuInS₂–ZnO heterojunction with well-matched band energy alignment and the superior electron mobility in ZnO nanorods led to a remarkable 3.75 times improved photoelectrochemical performance of the electrode under visible light irradiation.