Akademik Veri Yönetim Sistemi
Inorganic Chemistry Communications, cilt.170, 2024 (SCI-Expanded)
Although pure TiO2 has no significant electrochromic properties, it is used to investigate the electrochromic properties after the doping process. In this paper, TiO2 thin film was doped with Nb, and its surface and electrochromic properties were subsequently investigated. A thermionic vacuum arc deposition system was used to deposit the doped thin film, which was then annealed. Field emission scanning electron microscopy and atomic force microscopy were employed to obtain the surface morphology of the films. The Ti/Nb ratio was found to be 0.033. After annealing, the transparency value of the thin film increased to 85 %. The coloration efficiency was determined to be 375 cm2/C. The band gap of Nb2O5 was found to be in the range of 3.1–4.0 eV. For TiO2, the band gap was found to be 3.2 eV. Transmittance variation is about 3 %, and band gap variation in colouring and bleaching states is about 0.5 eV. During the colouring and bleaching states, the band gap value of the sample changed from 3.5 eV to 3.0 eV. The specific capacitance is 3 F/g for the thin film. Finally, the results show that Nb-doped TiO2 is a promising candidate for high-performance and long-life electrochromic material.