WO3 Applied for Electrochromic Smart Window

WO3, more precisely, a tungsten trioxide film, is an important raw material for preparing an electrochromic smart window - one of the best electrochromic materials for preparing electrochromic devices. So, in general, what performance should the electrochromic window have?

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From the practical requirements, electrochromic windows should generally have the following properties: the transmittance is 50-60% at bleaching state, and the transmittance is 10-20% at coloring state. Open circuit memory capacity is more than 24h. Response time is less than 60s. Cycle working cycle is greater than 105 times, which is equivalent to 15-20 years working life. The operating temperature range is -30°C-80°C. The working voltage is lower than 5V. In addition, in practical applications, the requirements for smart windows vary depending on the application. For example, the window glass used as the roof glass of car has higher requirements for temperature and UV resistance than the building window glass, but life expectancy is relatively low.

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