Zinc-doped titanium dioxide nanotubes were successfully synthesized, characterized, and tested as materials for energy conversion in dye-sensitized solar cells. The TiO2 nanotubes were grown through single-face anodization at a constant direct current voltage of 50 V and room temperature on titanium sheets with a thickness of 0.25 mm and purity of 99.7 %. The electrolyte was composed of ethylene glycol, ammonium fluoride (0.3 % wt. NH4F), and deionized water (2 % v/v H2O). The titania nanotubes were doped with Zn using Zn(NO3)2 as the dopant source. The molar ratios of zinc nitrate were varied from 1, 3, 5, and 7 mM. X-ray diffraction, scanning electron microscopy, and ultraviolet-visible spectroscopy (techniques were employed to characterize the Zn-doped titanium dioxide nanotubes. The samples were then tested in dye-sensitized solar cells, and their photoelectric conversion efficiencies were calculated. As a result, amorphous-TiO2 structure was transformed into the crystalline anatase phase after annealing. The best performance was observed for the 5 mM zinc nitrate sample, with a photoelectric conversion efficiency of 4.96 % and an energy band gap of 3.18 eV. The findings of this research provide valuable insights for ongoing and future studies in the development of renewable energy.