Tungsten oxide powder, more specifically, tungsten trioxide, is a main electrochromic material for producing a smart glass. Wherein, WO3 is used as an EC layer material in the form of an electrochromic film. And the prepared glasses can be applied to building windows. These windows use a process called electrochromism which turns a material in the window dark when an electrical current is applied.
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According to experts, the electrochromic technology has actually been used for years in cars, but not for windows instead it has been used to automatically tint your rear-view mirror. People with skylights, sunroom, large-area window or French window will especially find this useful as they will now be able to avoid the sun beating down on them in the middle of the afternoon. More importantly, such electrochromic glass can also play the role of heat preservation in cold winter. So, tungsten trioxide smart glass is also known as an energy-saving glass.
