Perovskite‐Based Photocathodes: Efficient and Stable Perovskite‐Based Photocathode for Photoelectrochemical Hydrogen Production (Adv. Funct. Mater. 17/2021)

In article number 2008277, Sanghan Lee, Kwanghee Lee, and co-workers report a perovskite-based photocathode for photoelectrochemical hydrogen production. The simultaneous improvement of the photocurrent and stability in organometal halide perovskite photocathode cells is successfully achieved by introducing both a L-proline zwitterion additive to perovskite materials and eutectic gallium indium alloy as a contact material for metal passivation. This approach could be an innovative technique for achieving high-performance organometal halide perovskite-based photoelectrochemical devices.