Synthesis of ZnO@TiO2 core-shell long nanowire arrays and their application on dye-sensitized solar cells

► Long ZnO nanowire arrays have been synthesized by using hydrothermal method. ► A TiO2 shell outside of ZnO nanowire is introduced by a fast dip-coating method. ► ZnO and ZnO@TiO2 core-shell nanowires are applied as the electrodes for DSSCs. ► The maximum conversion efficiency of ZnO@TiO2 electrode reaches to 3.80%.