Cesium Tungsten Bronze Applied for Heat Insulating Glass Coating

Cesium tungsten bronze is mainly applied for producing heat insulating glass coating with effective absorption property in near-infrared (NIR) region. And such a coating is often used to prepare a coating glass. And the coating glass exhibits 10% transmittance at 1,000 nm in the NIR region and over 80% transmittance at 550 nm in the visible region.

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According to the experts, to optimize the selectivity, the optical spectrum of the coating film on the glass was correlated with a theoretical model by combining the contributions of the Mie-Gans absorption-based localized surface plasmon resonance and reflections by the interfaces of the heterogeneous layers and the nanoparticles in the film. Through comparison of the composite and double layer coating method, the difference of the nanoscale distances between nanoparticles in each layer was significantly revealed. It is worth noting that the nanodistance between the nanoparticles decreased in the double layer film, which enhanced the optical properties of the film, yielding a haze value of 1% or less without any additional process. These results are very attractive for the nanocomposite coating process.

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