Structural and Photoelectrochemical Properties of BiVO₄ Thin Films

Abstract

Monoclinic scheelite BiVO 4 thin films have been successfully prepared by a chemical solution approach of polymer-assisted deposition. The films are transparent yellow with granular morphology and show a strong absorption in the visible light region. The band gap of BiVO 4 films is estimated to be 2.54 eV. The photoresponse of the films on conducting oxide electrode substrates is observed, and the photocurrent increases with the higher energy absorption bands.