Tungsten trioxide electrochromic film can realize intelligent heat insulation performance and dimming ding in large-area building smart windows and automotive smart glass. However, it is not a common tungsten trioxide film that can satisfy the application requirements of smart windows.
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Nowadays, the application of large-area building smart windows is getting more and more attention. So what requirements must the electrochromic materials used in large-area smart windows meet? - Large modulation amplitude, high coloring efficiency, excellent cycle stability and environmental durability, low drive voltage, and the like. However, as described above, common tungsten oxide film can not simultaneously satisfy the above requirements. Therefore, only tungsten oxide electrochromic materials with better electrochromic properties can meet the needs of the manufacturing of the large-area smart windows. According to experts, such tungsten trioxide material can be produced by doping different elements to improve all its performances such as Ti element, Mo element and Co element, etc.
