CdS/PbS co-sensitized ZnO nanorods and its photovoltaic properties

► CdS and PbS nanoparticles co-sensitized ZnO nanorods as photoanode of DSSCs. ► CdS and PbS sensitized ZnO by SILAR. ► High cell efficiency of ZnO/CdS/PbS mainly due to the stepwise band edge structure.