CdS QDs sensitized BiVO4 is developed and applied as the photoanode of QDSCs.
CdS QDs enhances the visible light response performance of BiVO4.
The aligned band states between CdS and BiVO4 suppress the carrier recombination.
Obtained mesoporous structure improves the interfacial carrier transporting.
CdS/BiVO4 QDSCs display remarkably enhanced power conversion efficiency.