A molybdenum dithiolene complex as a potential photosensitiser for photoelectrochemical cells

► Molybdenum dithiolene photosensitisers for the fabrication of photoelectrodes were synthesized. ► Chlorine-induced interactions improved the charge transfer between the sensitiser and TiO2 photoelectrode. ► The sensitiser LUMO energy level was comparable to TiO2 conduction band edge. ► Molybdenum dithiolene-doped TiO2 photoelectrode showed a higher photoresponse compared to undoped TiO2 film.