Single-crystalline BaxSr1-xTaO2N solid-solution photocatalyst with low defect concentrations for solar-driven water splitting. - Wang F; Nakabayashi M; Nandal V; Grötzner G; Shoji R; Iwaizumi H; Vequizo JJM; Shibata N; Kanome N; Streibel V; Li W; Matsuzaki H; et al. (Nature communications, 2026)