Tungsten Oxide Powder Applied for Electrochromic Material

Tungsten oxide powder, more specifically, tungsten trioxide powder, is an important electrochromic material for preparing a smart glass. Wherein, WO3 is used to assemble an electrochromic glass in the form of a thin film. As you may have known, a smart glass just got a lot bigger. And experts and makers want that fact to be as transparent as possible.

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The makers rolled out several sheets of the high-tech glass, measuring 6 ft. x 10 ft., the largest smart glass ever made available commercially at the Greenbuild show. The giant-sized smart glass, which works in accordance with the mechanism of electrochromism, allows architects and designers to create expansive facades, while meeting building energy codes and standards. So, do you know that what is electrochromism? Electrochromism refers to the material being injected or extracted by ions or electrons under alternating high or low or positive and negative external electric fields, thereby reversible changes produced between a low transmittance coloring state and a high transmittance bleaching state. And the material appears as a reversible change in color and transparency. That is to say, WO3 is a material that can undergo a reversible change in color and transparency under the action of an external electric field.

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