Tungsten Trioxide Powder Applied for Electrochromic Material

Tungsten trioxide powder is an inorganic electrochromic material that is extremely important for applying in smart windows. And the application of WO3 material in electrochromic field is being gradually promoted. Speaking of electrochromism, it dates back to the early 1960s. At the time, Platt discovered electrochromism when studying organic pigments. After that, people began to pay attention to electrochromic materials.

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In the early 1970s, the world's first electrochromic device appeared. Deb found that tungsten oxide changed from colorless to blue under the action of an applied electric field. And he was successfully prepared the first electrochromic device by using an amorphous tungsten oxide film. In 1973, Deb made a breakthrough in theory and proposed the famous tungsten oxide color center model, marking the beginning of a new development period in the electrochromic field. Subsequently, scientists also found that metal oxides such as nickel oxide, molybdenum oxide, and antimony oxide also have electrochromic properties, and began research on inorganic discoloration materials.

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