WO3 film for electrochromic device can be prepared by electrophoretic deposition method. For example, some experts have prepared a tungsten trioxide film by electrophoretic deposition and heat-treated the film at 100°C.
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Experts have found that the obtained tungsten trioxide electrochromic film exhibits a hexagonal phase microstructure. And it is partially amorphous. The difference between the colored light transmittance and bleached light transmittance of the film is 68%. The fading time is 8s. And the cycle life of the film reaches 104s or more. But do you know why adopt the electrophoretic deposition method to prepare a tungsten oxide film? Compared with other methods, the electrophoretic deposition method is simpler and more controllable. And the coating is more uniform, so it can be used for the preparation of composite film. However, what should be noted is that the area of the tungsten trioxide film produced is relatively small due to the influence of the coating area.
