TiO2 Nanowires Prepared by Anodization in Combination with Hydrothermal Method on the Ti Sheet for Dye-sensitized Solar Cell

Abstract

In this work, we prepared a porous seed by anodization method and the prepared samples were prepared by nanowires method using hydrothermal method. The samples were selected for nanowires and nanopores for dye-sensitized solar cells fabricated. We found that the TiO₂ nanowires were prepared by two methods: anodization and hydrothermal methods. The prepared samples were characterized with X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis. The XRD pattern shows that both the nanostructures are anatase and rutile phases with good crystalline nature. The morphological results show that the nanoporous TiO₂ has a diameter of about 50 nm and the TiO₂ nanowires have diameters between 50 - 100 nm with length of about 250 nm. The solar cell energy conversion efficiency of the nanoporous TiO₂ cell is about 4.2% with J_sc of 5.9 mA cm^-2, V_oc of 0.82 V and FF of 0.60. The solar cell energy conversion efficiency of the nanowires TiO₂ cell is about 5.8 % with J_scof 8.4 mA cm^-2, V_oc of 0.85 V and FF of 0.57.