Conveniently fabricated heterojunction ZnO/TiO2 electrodes using TiO2 nanotube arrays for dye-sensitized solar cells

▸ We fabricate ZnO/TiO2 heterojunction as photo-anode in DSSCs. ▸ We use many characterizations to investigate properties of ZnO/TiO2 heterojunction. ▸ The results show that efficiency of DSSCs improves approximately double under optimum condition.