Cesium Tungstate Applied for Near-infrared Absorption Film

Cesium tungstate for preparing near-infrared absorption film is also known as cesium tungsten bronze with the formula of CsxWO3. And it is often Cs0.33WO3 or Cs0.32WO3. It is reported that the near-infrared absorption film prepared using cesium tungstate nanoparticles as functional material is often used for heat insulation of building glass to reduce room temperature, thereby reduce energy consumption for air conditioning and thus decrease emission of carbon dioxide.

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Also, such an energy saving film can shield the excessive ultraviolet radiation harmful to human skin. And it will allow most of the visible light to pass through. Specifically, the heat insulation film of cesium tungsten bronze has an ultraviolet shielding rate higher than 99.5%, a visible light transmittance of 70-85%, and a near-infrared shielding rate of 85-99%. In a word, such an energy-saving film is a way to solve the problems of environmental pollution and energy resources shortage.

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