Cesium tungsten bronze can be applied as the window heat insulation film. Building energy efficiency is an important part to achieve the target of sustainable development. Cesium tungsten bronze material can selectively shield ultraviolet rays and infrared rays so that it has attracted much attention in building industry in reducing energy consumption of refrigeration with good daylight.
The chemical formula of cesium tungsten bronze is CsxWO3, where x is between 0 and 1, so the material can be regarded as the solid solution formed by Cs+ intercalation into the void of WO3. CsxWO3 has high transmittance on visible light, and can shield ultraviolet rays by intrinsic absorption.
In hot areas, the glass is usually coated with the transparent thermal insulation coating, which contains cesium tungsten bronze nanocrystals. These glasses can effectively shield ultraviolet and infrared rays while preserving indoor lighting, and therefore, alleviate hot feeling caused by summer sun exposure, and effectively reduce the energy consumption of air conditioning. It can be seen that cesium tungsten bronze is an important optical dingal material with broad application prospects.
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