Tungsten trioxide is assembled in a large area electrochromic device in the form of an electrochromic thin film to serve as a cathode coloring material. Experts said that for large-area electrochromic devices assembled with WO3 electrochromic film, in practical use, the cycle stability should also be taken into account in addition to factors such as light modulation range, coloring efficiency and response time.
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Experts went on to say that the cycle stability of electrochromic devices assembling with tungsten trioxide electrochromic thin film is characterized by cycle life. In practice, long-term use of electrochromic devices can be worn out and even be unusable, which is mainly due to solid phase physical changes or chemical side reactions. If the voltage difference applied in the cycle is too large, the cycle life of the device will also be shortened. Therefore, during use, it is generally not switched between the maximum capacities of the electrochromic devices.
