Nano Cesium Tungsten Bronze Applied for Glass Curtain Wall Thermal Insulating Coating

Nano cesium tungsten bronze has attracted great attention in recent years as it is a new type of near-infrared shielding material that can be applied to produce glass curtain wall thermal insulating coating. As a critical component of buildings, windows can lose energy easily. Therefore, energy-efficient window coatings are considered to be the important step for reducing heat transfer between the indoor and outside environments.

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According to the experts, due to the high free electron density, cesium tungsten bronze has remarkably superior NIR shielding ability and visible transmittance than some transparent thermal insulation coatings like noble metals (Ag, Au), black compounds (ruthenium dioxides, rhenium trioxides), rare-earth hexaborides (lanthanum hexaborides), and semiconductor oxides (ITO, ATO, AZO, etc.). Among them, cesium tungsten bronze (CsxWO3) is WO3 doped with monovalent ions Cs+. The high free electron density can be utilized to produce localized surface plasma resonance.

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