Violet tungsten oxide may be applied for manufacturing near-infrared shielding material, which is a transparent material with excellent thermal insulation properties. In other words, violet tungsten oxide is selective for the solar spectrum so that it exhibits comprehensive properties of absorbing ultraviolet rays, blocking infrared heat radiation, and transmitting visible light. And therefore, it is widely used in the field of construction.
A layer of uniform transparent coating film will be formed if you coat the surface of the glass with nano transparent heat insulating coating of violet tungsten oxide, thereby ensuring the day lighting of the glass and imparting related thermal insulation effects to the glass. The nano-conductive particles in this thin coating film contain a certain concentration of electron holes, which will cause the absorption of free carriers. And it is manifested in the solar spectrum, the transmittance of the coating film is not affected in the visible light region with a wavelength of 400 to 800nm; The absorption wavelength of the coating film is about 90% in the ultraviolet region with a wavelength of less than 400nm; And the near-infrared region with a wavelength of 800 to 2500nm acts as a reflection barrier for the amount of solar energy distributed in the infrared region of about 43%.
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