Photo-catalytic activity of BiVO4 thin-film electrodes for solar-driven water splitting

- Carrier dynamics of BiVO4 thin films made by dip-coating have been studied.
- Influence of the BiVO4 thickness on photo-electrochemical performance was analyzed.
- Optimum thickness of 160 nm guarantees efficient charges transport and transfer.
- Electrochemical impedance spectroscopy was employed with proper equivalent circuits.