The properties of Ti doped tungsten oxide are better than those of pure tungsten oxide. Specifically, some experts have used a magnetron sputtering method to prepare a Ti-doped tungsten oxide film. The test results show that:
The Ti-doped nano WO3 film has a reduced degree of crystallization, grain refinement, and loose lattice structure, so that the channels for ion extraction and injection are greatly increased, the electrical response speed is increased, and the cycle life is improved by more than 4 times, but the visible light transmittance is reduced compared to pure WO3 film.
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Experts say that this is because the atomic radius of Ti is not much different from the atomic radius of W. Therefore, when Ti is used to dope WO3, the displacement reaction is easy to occur, thereby changing the lattice structure of WO3 and reducing the crystal defects. Doping Ti into tungsten oxide can change its electrochromic properties, accelerate its electrical response speed, and prolong the cycle life.
