Inorganic Electrochromic Material: Tungsten Trioxide Film

Tungsten trioxide film is an inorganic electrochromic material that can be used to prepare a variety of electrochromic devices, such as smart windows for energy-saving buildings. For preparing electrochromic devices with excellent performance, it has many requirements, such as, high coloring efficiency, good stability, short response time, high optical contrast, optical storage, and the like. But, why do electrochromic devices need to have good cycle stability?

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Experts say that the cyclic stability between multiple coloring and bleaching limits the use of electrochromic materials in electrochromic devices. Materials can cause equipment failure under different applied voltages and under unsuitable environmental conditions. Therefore, better cycle stability is the direction pursued by the researchers for producing better electrochromic devices in the future. Also, it is also necessary to select suitable conditions of use. As the energy-saving market is large, tungsten trioxide and its electrochromic products such electrochromic film and smart glass will have a promising prospect of applications.

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