Synthesis of Cu3BiS3 nanosheet films on TiO2 nanorod arrays by a solvothermal route and their photoelectrochemical characteristics

This paper presents an investigation on the synthesis and characterization of Cu3BiS3 nanosheet films on a TiO2/FTO substrate by a solvothermal route and the photoelectrochemical characteristics of the Cu3BiS3/TiO2 composite films are demonstrated as well. The results show that Cu3BiS3 nanosheets with an average thickness of 30 nm were successfully synthesized on the surface of TiO2 nanorod arrays. The photoelectric properties of the Cu3BiS3/TiO2 composite film indicate that the fill factor of the film photoelectrode is 60.8%, and the energy conversion efficiency is 1.281%, which is higher than that of a bare TiO2 nanorod array photoelectrode.