Tungsten Trioxide Thin Film

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?

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The methods for preparing the tungsten oxide film include a thermal evaporation method, an electrodeposition method, a hydrothermal method, a sol-gel method, a magnetron sputtering method, and the like. Among them, preparing WO3 films by magnetron sputtering method has many advantages, such as strong adhesion between the film and the substrate, uniform thickness, and fast deposition rate, which is conducive to large-scale production of coating films. Internationally, some smart glass manufacturers in the United States, Germany, and Sweden use magnetron sputtering method to produce the raw material for electrochromic films.

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