A Novel Thermochemical Metal Halide Treatment for High-Performance SbSe Photocathodes.

The fabrication of cost-effective photostable materials with optoelectronic properties suitable for commercial photoelectrochemical (PEC) water splitting represents a complex task. Herein, we present a simple route to produce SbSe that meets most of the requirements for high-performance photocathodes. Annealing of SbSe layers in a selenium-containing atmosphere persists as a necessary step for improving device parameters; however, it could complicate industrial processability.