Compared with tungsten trioxide film, the coloring efficiency of Ta doped WO3 film is improved. In other words, the electrochromic property of the film is improved, wherein the threshold value of the Ta doping amount is 15%, and excessive doping is not favorable for the film to show high electrochromic efficiency.

What is the electrochromic performance of a Ta doped tungsten oxide film? Some experts have learned through the following experiments.

The cycle life of Ta doping WO3 film is an important parameter for the application of electrochromic materials and one of the important criteria for evaluating its performance.

The electrochromic film of Ta doped tungsten trioxide nanoparticles has an amorphous structure, just like tungsten trioxide electrochromic film. Experts said that the tungsten trioxide film deposited at room temperature is an amorphous electrochromic film with a smooth surface, uniform texture and porosity.