Nano grain size yellow tungsten oxide may be applied for preparing window heat insulation film, and thus be used in glass window of building, which is also called “smart window”. It plays a role of heat insulation and energy saving. Also, it improves human comfort and saves energy charge of air conditioning in hot summer.
There are two methods for applying yellow tungsten oxide in heat-insulating glass, which is mainly in accordance with its discoloration properties, that is, by electrochromic property or photochromic property of yellow tungsten oxide.
What is discoloration performance of material? The discoloration performance of a material refers to the phenomenon that the material may change its color under the influence of some external factors, such as light, electric field, pressure, temperature, gas, and solvent, etc. The discoloration process is usually reversed, which means that the color of the material may be restored by changing external conditions.
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