Suppression of Undesired Losses in Organometal Halide Perovskite‐Based Photoanodes for Efficient Photoelectrochemical Water Splitting (Adv. Energy Mater. 31/2023)

Photoelectrodes In article number 2300951, Jangwon Seo, Sanghan Lee, and co-workers report efficient organometal halide perovskite-based photoanodes for photoelectrochemical water splitting. The simultaneous suppression of undesired internal and external losses of photogenerated carriers in photoanodes is achieved by glycidyltrimethylammonium chloride treatment and chemical conversion of integrated catalysts, respectively, resulting in a remarkable applied bias photon-to-current efficiency of 12.79%. This approach provides a promising strategy for rational design of photoelectrodes.