WO3 powder, or tungsten trioxide powder, can be used to prepare an electrochromic film, and then be used to produce an electrochromic smart window, which are ultimately applied in buildings or high-end cars to provide intelligent heat insulation and heat preservation performance with high transparency.

Tungsten trioxide is a very important raw material for obtaining an electrochromic smart window. Specifically, WO3 can be prepared into an electrochromic film, and then be used to prepare an electrochromic device. For example, some experts have developed a G/ITO/WO3/LiClO4-PC/NiO/ITO structure complementary semi-solid smart window, and found that its performance has reached practical requirements. In addition, such smart window also has the characteristics of large area and uniform discoloration, which provides a feasible basis for the further development of large-area smart windows.

Tungsten trioxide is one of the most important raw materials for the preparation of an electrochromic window. Specifically, WO3 is applied to such a smart window in the form of an electrochromic film. And such smart windows have been widely applied in building glass windows or doors, glass curtain walls, automotive rearview mirrors and windows, aircraft windows and other industrial fields for high heat-insulating and anti-glare performance.

Tungsten trioxide film can be used to prepare a tungsten trioxide electrochromic film for assembly of an all-solid-state complementary electrochromic window. According to experts, smart window is a promising energy-saving material for energy-saving reconstruction of building. So how to prepare WO3 film that acts as an EC layer in a smart window? Some experts have prepared tungsten oxide film by electron beam evaporation.