The surface destruction of the ZnO nanorod electrodes occurs in the dye-sensitization process, resulting in the extreme decreases of the short-circuit photocurrent density (J(SC)), compared to TiO(2)electrodes. To solve these problems, the TiO(2)nanolayer is coated on the ZnO nanorod electrodes using a titanium tetrachloride (TiCl4) assisted sonochemical process, which provides faster surface modification. The TiO(2)nanolayer can form new energy barrier on the ZnO nanorods, which can effectively inhibit the surface charge recombination and improve the energy conversion efficiency of the ZnO nanorod-based dye sensitized solar cells (DSSCs).