We prepared highly ordered titanium dioxide nanotube arrays (TNAs) by anodizing Ti foils in F- containing electrolyte. The thickness and dye loading amount of TNAs were 26 mu m and 1.06 x 10(-7) mol cm(-2), respectively. TiO2 nanoparticles (TNPs) were electrophoretically deposited on the inner wall of nanotube to produce coated nanotube arrays (TNAP). The dye loading was increased to 1.56 x 10(-7) mol cm(-2), and the electron transport rate improved. TNAs and TNAP were sensitized with ruthenium dye N3 to yield dye-sensitized TiO2 nanotube solar cells. The power conversion efficiency of TNA-based dye-sensitized solar cells (DSSCs) was 4.28%, whereas the efficiency of TNAP-based DSSCs increased to 6.28% when illuminated from the counter electrode. The increase of power conversion efficiency of TNAP-based DSSCs is ascribed to the increased surface area of TNAs and the faster electron transport rate. (C) 2011 Published by Elsevier Ltd.