A compact and nanoporous structured WO3 film was prepared by electrodeposition. For a nanoporous structured WO3 film, polystyrene (PS) beads with a size of 320 nm were used as the template. The PS beads were completely removed by the thermal treatment, affording inverse opal WO3 films. For the inverse opalWO3 film (1 min), the highest photocurrent density (1.75 mA/cm2 at 1.5 V versus sat. Ag/AgCl) was achieved and exhibited a superior PEC performance, up to ∼46% compared to the compact WO3 film.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Surfaces, Coatings and Films
- Materials Chemistry