Nano yellow tungsten oxide can be applied for preparing electrochromic film. In recent years, many people have been working on the preparation of yellow tungsten oxide nano film materials. And the most common preparation methods are electrochemical deposition method, hydrothermal method, magnetron sputtering method, and thermal evaporation deposition method.
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However, these methods all have some disadvantages. For example, the prepared film is composed of disordered random nanomaterials so that some electrochromic materials cannot be utilized efficiently. Therefore, it is very important to prepare a regularly arranged tungsten oxide nano array electrochromic film. In this regard, the expert provides a tungsten trioxide nano array electrochromic film and a preparation method thereof, and the prepared electrochromic film has the morphology of nano-clusters, nano-trees or nanowire arrays. Also, it has good electrical connectivity. Besides, the film has the advantages of large spectral adjustment range, fast response speed and long cycle life. At the same time, the preparation process is easy to control with lower manufacturing cost and easy to be industrialized for large area production.
