Enhanced Efficiency of Dye-Sensitized Solar Cells Using Anodic Titanium Oxide Nanotube Arrays

Abstract

This paper concerns the microstructure of the anodic titanium oxide (ATO, ) 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 were controlled by HF and KF aqueous solutions for varied periods of anodization . The electrolyte in ethylene glycol can produce for varied periods of anodization . ATO made of 0.3 ( HF), 12 ( KF), and ( ) was used for the DSSC anode; the best cell performance attained 0.13, 3.76, and 6.18%. The DSSC made of ATO has a short-circuit current density of , a fill factor of 0.64, an open voltage of , and a photocurrent efficiency of 6.18% under an air mass 1.5 illumination test.