Some experts have found that Ti-WO3 thin film is cubic phase before and after coloring, while WO3 film has a transition from monoclinic phase to cubic phase before and after coloring.

Ti-doped tungsten trioxide thin film is a new type of electrochromic thin film that is gradually used in the field of smart windows. Some experts used metal tungsten and titanium metal as sputtering targets to prepare Ti-doped WO3 electrochromic film on ITO glass. The results show:

Tungsten trioxide electrochromic film can realize intelligent heat insulation performance and dimming function in large-area building smart windows and automotive smart glass. However, it is not a common tungsten trioxide film that can satisfy the application requirements of smart windows.

Tungsten trioxide thin film has the advantages of large discoloration width and high coloring efficiency. Therefore, tungsten oxide has received more attention than other electrochromic materials. The architectural glass applying with tungsten trioxide thin film is a kind of smart glass, which is the development direction of building energy-saving glass in the future. So, what are the preparation methods of tungsten trioxide electrochromic film?