Nano grain size tungsten trioxide may be applied for window heat insulation film with electrochromic property. Electrochromism refers to the phenomenon that the color or transmittance of a material changes reversibly under the action of a certain electric field or voltage.
This type of heat-insulating glass not only has the ding of beautifying the building, but also reduces the indoor temperature, thereby reducing the use of air conditioners in hot summer and the occurrence of air conditioning diseases. In addition, it can block glare, allowing you to look at the distant scenery through the soft glass in the scorching hot sun.
Electrochromism of Tungsten Trioxide Film
When electrons and ions are implanted into the transparent tungsten trioxide film, the film is blue, and when ions and electrons are extracted, the film new_s to its original transparent state. This is because a part of W6+ is reduced to W5+, thereby generating MxWO3.
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