Tungsten Trioxide Electrochromic Film Applied for Electrochromic Window

Tungsten trioxide electrochromic film can be used to assemble an electrochromic window as it has electrochromic properties in the infrared region of visible light. According to experts, the WO3 electrochromic thin films can be classified into two types, amorphous type and crystalline type.

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Experts say that in practical applications, amorphous WO3 film can not meet the demand. Experts explained that even if amorphous tungsten trioxide electrochromic thin film has high coloring efficiency and fast color conversion, what can not be ignored is that its structure is loose and chemical stability is poor, so the prepared electrochromic window has a short cycle life, and therefore it can not meet actual demand. While crystalline tungsten trioxide electrochromic thin film has a relatively compact structure and good cycle stability. However, if compared with the amorphous WO3 film, the crystalline WO3 film has a poor coloring efficiency and a relatively long response time.

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