Water Splitting: In Situ Formation of Oxygen Vacancies Achieving Near‐Complete Charge Separation in Planar BiVO4 Photoanodes (Adv. Mater. 26/2020)

In article number 2001385, Lianzhou Wang and co-workers develop a planar BiVO4 photoanode with in-situ-formed oxygen vacancies in the whole film for efficient photoelectrochemical water splitting. They reveal that, under AM 1.5 G illumination, oxygen vacancies increase the majority charge carrier density and photovoltage, leading to an excellent applied bias photon-to-current efficiency of 2.76%.