Nano Cs doped tungsten oxide, or cesium tungsten bronze nano powder, is also known as transparent thermal insulation nanopowder, which is not transparent, but is blue in color. While products of Cs doped tungsten oxide is transparent, such as, thermal insulation coating, thermal insulating film and heat insulation dispersion.
According to experts, the chemical formula of cesium tungsten bronze can be Cs0.33WO3, which belongs to one of tungsten bronze (TB) type. Cs0.33WO3 is a non-stoichiometric narrow band gap semiconductor material. And it has a high concentration of free carriers, a high transmittance in the visible region, and a strong shielding effect in the near-infrared region.
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As we all know, the heat in sunlight is mainly concentrated in the two bands, including visible light band and near-infrared band. In a word, Cs0.33WO3 material can ensure good visible light transmission, and can shield most of the heat brought by near-infrared light, so it can be used as dingal particles of the transparent coating.
