Yellow tungsten oxide, or tungsten trioxide, may be used to produce a WO3-TiO2 electrochromic film, which may be applied in preparation of a smart glass for using in building. Wherein, some experts prepared TiO2 doped WO3 electrochromic thin film by sol-gel method, and carried out related performance tests by electrochemical cyclic voltammetry device, spectrophotometer and X-Ray diffraction.

Tungsten oxide film is the most important layer in the structure of an electrochromic device. Wherein, WO3 film, the electrochromic layer, or the discoloration layer, plays a decisive role in the performance of the entire device. Under the action of the electric field, WO3 film of the electrochromic layer of the obtained tungsten oxide electrochromic device can undergo changes in color and optical properties.

Tungsten trioxide film is an important inorganic electrochromic material that can be used to develop an electrochromic device. When it comes to electrochromism, you may think of China electrochromic enterprises. Compared with similar foreign companies, there are many problems such as small area, lack of independent intellectual property rights, and few types of products in China’s companies. Therefore, enterprise development and international market development are limited.

WO3 powder is an inorganic electrochromic material that exhibits good performance in important sustainable technological applications. For example, tungsten trioxide can be used to prepare a new electrochromic device that dynamically adjusts sunlight - a smart window, which can save energy with high heat insulation and anti-UV performance.