A double-layer (DL) film with a TiO 2 nanosheet-layer on a layer of TiO 2 nanorod-array, was synthesized on a transparent conductive fluorine-doped tin oxide substrate by a two-step hydrothermal method. Starting from the precursors of NaSeSO 3 , CdSO 4 and the complex of N(CH 2 COOK) 3 , CdSe quantum dots (QDs) were grown on the DL-TiO 2 substrate by chemical bath deposition method. The samples were characterized by X-ray diffraction, Scanning electron microscopy, Energy dispersion spectroscopy, and their optical scattering property was measured by light reflection spectrometry. Some CdSe QDs sensitized DL-TiO 2 films serve as the photoanodes, were assembled into solar cell devices and their photovoltaic performance were also charac-terized. The short circuit current and open-circuit voltage of the solar cells range from 0.75 to 4.05 mA/cm 2 and 0.20 − 0.42 V under the illumination of one sun (AM1.5, 100 mW/cm 2), respectively. The photocurrent density of the DL-TiO 2 film is five times higher than that of a bare TiO 2 nanorod array photoelectrode cell.