Tungsten oxide, more precisely, tungsten trioxide, can be prepared into a WO3 electrochromic film, and then be applied for preparing a new electrochromic device. Wherein, WO3 film, an important and widely studied electrochromic material, easily implements reversible optical switching properties from transparent to blue in electrochemical cells, and therefore, it can be used to prepare various electrochromic devices, smart windows, and new type of electrochromic devices. That is to say, WO3 And WO3 electrochromic devices have broad application prospects.
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So, what are the main performance indicators of electrochromic materials or devices? Modulation amplitude of light, response time, coloring efficiency, and cycle stability. Wherein, the modulation amplitude of light refers to the difference in light transmittance of an electrochromic material or device in a faded state and a colored state at a specific wavelength, which reflects the degree of contrast of the electrochromic material or device before and after coloring. The larger the modulation amplitude of light, the better.
