Another approach to increase the PEC performance of our photocathodes is to implement a more suitable buffer layer than TiO2. In2S3 has been reported to have a conduction band position of 0.3-0.4 eV higher than TiO2 and hence could yield potentially a higher photovoltage. Therefore, Sb2S3/In2S3/TiO2/Pt photocathodes were fabricated in order to test whether larger photovoltage could be achieved. In2S3 was deposited by chemical bath deposition on the Sb2S3 (270°C) thin films followed by TiO2 (100 nm) and Pt as a hydrogen evolution catalyst.