PEO-doping WO3 electrochromic film referred to the WO3 electrochromic film doped with PEO, which has obvious changes in the coloring transmittance and bleaching transmittance in the visible light region. Also, the cycle reversibility of the PEO-doped WO3 film is better. In addition, the coloring response speed and bleaching response speed of the doped tungsten trioxide film are also faster, so it can be used for the preparation of electrochromic devices and smart windows.
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Some experts used the sol-gel method to study the preparation of WO3 films doped with PEO by orthogonal design experiments. The related performance tests were carried out by electrochemical cyclic voltammetry, spectrophotometer and X-Ray diffraction. Experts have found that doping a certain amount of PEO can increase the ion and electron conductivity of the tungsten oxide film, increase the response speed of the film, and improve the discoloration performance of the film.
