Investigation the effect of high anodization voltage on TiO۲ nanotubes properties and application in dye sensitized solar cell

چکیده مقاله

In this research, we can produce the large diameter TiO2 nanotubes by electrochemical anodization at various high anodization voltages from 150 V to 220 V. The as synthesized products were characterized by powder X-ray diffraction (XRD), field-emission scanning electronic microscopy (FE-SEM) and UV–Vis diffuse reflectance spectroscopy analysis (UV–Vis). The interpore distance and bandgap of the nanotubes is increased with enhanced anodization voltage. The large diameter TiO2 nanotubes in these high voltages showed higher solar cell efficiency (energy conversion efficiency improved by 36.4 %) compared with conventional TiO2 nanotube arrays.