Effects of boron doping in TiO2 nanotubes and the performance of dye-sensitized solar cells

► The effects of boron doping into TiO2 nanotubes have been presented. ► Boron doping contributed to the conduction band shift in TiO2. ► The boron-doped TiO2 nanotube electrodes showed an enhanced performance compare to those of undoped TNAs. ► Effective retardation of the charge recombination reaction was observed in boron-doped TiO2 electrode.