WO3 Film Applied for Electrochromic Smart Window

WO3 film is used as an EC film that has a color-changing function in a five-layer film of an electrochromic smart window. So, do you know how the electrochromic window works? Experts take cathode coloring electrochromic materials as an example to introduce the working process of electrochromic devices.

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The working process of the electrochromic device is: Under the action of the applied voltage, the electrons provided by the transparent conductive layer and the positive ions stored in the ion storage layer and transported by the ion conductor layer in a fast ion mode are injected into the electrochromic layer to make electrochromic layer colored by an electrochemical reaction of redox. When the reverse voltage is applied, a process reverse to that described above occurs, and electrons and ions are extracted from the electrochromic layer to bleach the electrochromic layer. It can be seen that the performance of the electrochromic window is determined by the properties of the materials of each layer. Therefore, to obtain a smart window with excellent performance, each layer of material must be carefully selected.

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