Yellow tungsten oxide film for electrochromic smart glass can be prepared by pulse spray pyrolysis. Some experts have prepared a fibrous network of WO3 film that is transparent and well bonded to the substrate by pulse spray pyrolysis.
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Experts dissolved WO3 powder in ammonia water at 90 °C to obtain ammonium tungstate. Among them, ITO was selected as the substrate, substrate temperature was 300 °C, and compressed air was used as carrier gas. By 5s pulse spray pyrolysis in a five-second interval, tungsten oxide electrochromic film is prepared. The obtained film can be used to assemble glass, and the most energy-saving glass in the world, the electrochromic smart glass, can be obtained. So, it is believed that the tungsten trioxide is one of the most promising new heat insulating materials at home and abroad. And therefore it is more and more widely used in glass curtain walls, aircraft portholes, building glass windows and doors, automotive rearview mirrors and windows, etc. In a word, WO3 electrochromic window is very suitable for smart home, autonomous driving, IoT usage scenarios, and is a trend product in the construction field.
