Fig. 3. XRD patterns for BiVO₄ films grown on FTO-coated glass by AACVD before annealing (as deposited) and after annealing at 500 °C for 2 hours in air. Data is plot alongside PDF card references patterns for SnO₂ (i.e. the FTO substrate), BiVO₄, Bi₂VO₅, Bi₂O₃ and V₂O₅.