Nano tungsten oxide may be used in heat insulating window glass, which is mainly to shield the ultraviolet (UV) and infrared rays, thereby reducing the temperature inside the car and improving the comfort of human body.
Tungsten oxide can also be used on electrochromic devices with excellent electrochromic properties. And therefore, such electrochromic devices will have shorter color change response time, i.e., higher color conversion rate. This requires that the entire color change reaction have higher reaction rate under the action of an applied electric field, and the light transmittance can be greatly changed in a short period of time, which can be expressed in the high sensitivity of color change. This property is closely related to the properties of the electrochromic layer (one of the five layers of electrochromic devices), which is one of the main factors affecting the research, development direction and application range of the electrochromic material. The electrochromic device is generally composed of two transparent conductor layers, a counter electrode layer, an ion conductor layer and an electrochromic layer.
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