Abstract
In this paper we report on the fabrication of heterojunction photoanodes which are based on vertically oriented WO nanorods (NRs) capped with an extremely thin BiVO layer with the help of combination of Glancing Angle Deposition (GLAD) and physical sputtering techniques. We detected experimental parameters to optimize a nanostructure of WO -NRs/BiVO photoanodes, which later were modified with a Co-Pi oxygen evolution co-catalyst and showed significantly enhanced photocurrent of 3.2 mA/cm at 1.23 V under the standard simulated solar light.