Facile Aqueous Solution‐Gel Route toward Thin Film CuBi2O4 Photocathodes for Solar Hydrogen Production. - Joos, Bjorn; Elen, Ken; van den Ham, Jonathan; Meulendijks, Nicole; Buskens, Pascal; Paulus, Andreas; Wouters, Koen; Manca, Jean; D'Haen, Jan; Shukla, Sudhanshu; Vermang, Bart; Van Bael, Marlies; et al. (Advanced Sustainable Systems, 2023)