Cesium Tungsten Bronze Applied for Near Infrared Absorbing Material

Cesium tungsten bronze, or CsxWO3, is known as a near infrared absorbing material because it can selectively absorb near-infrared light, through local surface plasmon resonance and polaron resonance. Well, how to prepare cesium tungsten bronze?

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At present, the experts are producing cesium tungsten bronze nano particles using a solid-state reaction breakdown method. After synthesizing CsxWO3 coarse powder of several tens of micrometers by the solid phase reaction method, it is finely pulverized to the desired nano level by wet pulverization using a medium stirring mill such as a bead mill. However, since the particles are pulverized by the strong impact force and shear force, the Cs on the surface of the CsxWO3 nanoparticles is desorbed and WO3-δ increases. As a result, hydrogen radicals generated in the resin are dissociated and photo-colored by a reaction occurring on WO3-δ, thereby improving light resistance.

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