This paper concerns the microstructure of the anodic titanium oxide ATO, TiO2 nanotube NT and its use for the dye-sensitized solar cell DSSC device. The ATO length was controlled by various electrolytes and anodic time at various constant applied voltages. The lengths of the NTs at 0.3–0.5 and 0.9–22 m were controlled by 0.5 vol % HF and 0.58 wt % KF aqueous solutions for varied periods of anodization 1–24 h. The 0.5 wt % NH4F electrolyte in ethylene glycol can produce 4–41 m for varied periods of anodization 0.5–8 h. ATO made of 0.3 0.5 vol % HF ,1 20.5 wt % KF, and 18 m 0.5 wt % NH4F was used for the DSSC anode; the best cell performance attained 0.13, 3.76, and 6.18%. The DSSC made of 18 m ATO has a short-circuit current density Jsc of 13.45 mA/cm 2 , a fill factor of 0.64, an open voltage Voc of 0.72 V, and a photocurrent efficiency of