Cesium tungstate, or cesium tungsten bronze, is generally used for preparing heat insulation window film. And it is cesium tungsten bronze nanoparticles that turn a common window into a smart window, and make it show excellent absorbance in near infrared light with high transmittance in visible light region. In recent years, these smart films are often seen in glasses of buildings and automobiles as they can lower the temperature and reduce energy consumption to achieve the purpose of environmental protection.
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Well, do you know what affect the near-infrared absorption and visible light transmittance of the film? According to the experts, the particle concentration and size distribution of the material depend the absorbance in near infrared light and transmittance in visible light region. The experts also introduced that the stable aqueous dispersions of cesium tungsten bronze can be successively fabricated using KOH solution of PH=8 as a stabilizing agent. And the optimum concentration of stable aqueous dispersions is 0.03wt% cesium tungsten bronze on the basis of their spectral properties. The heat insulation window film of cesium tungstate will be more and more popular as it can achieve the purpose of energy conservation and consumption reduction.
