Yellow Tungsten Oxide Powder Applied for Electrochromic Material

Yellow tungsten oxide powder, also known as tungsten trioxide powder, is an electrochromic material. So what are electrochromic materials? Electrochromic materials are able to change their optical properties in a persistent and reversible way under the action of a voltage pulse. According to experts, in recent years, the fields of electrochromic materials and devices are expanding rapidly.

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As you may have known, electrochromic devices of tungsten trioxide film can be used to assemble a smart window (a variable-transmittance window), whose transmission and reflection characteristics and its colors are reversibly changed in appearance. Besides, such a smart device is of particular interest for information displays, variable-reflectance mirrors and variable-emittance surfaces. It also has a wide application in high-tech products such as color-changing sunglasses, high-resolution optoelectronic camera equipment, photoelectrochemical energy conversion and storage equipment, and electron beam metal plate printing technology. In addition, in recent years, the application of electrochromic materials such as tungsten trioxide in the production of electronic ink display materials has also begun to take shape.

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