Cs doped tungsten oxide nanoparticles, or Cs-doped WO3 nanoparticles, or cesium tungsten bronze nanoparticles, are mainly applied to prepare near-infrared shielding material such as heat insulation film and heat insulation coating as Cs-doped WO3 nanoparticles have strong absorption in the NIR wavelengths to shield heat radiation. And these transparent heat insulation products are widely applied to glasses of buildings and autos.
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According to the experts, as for Cs doped tungsten oxide nanoparticles, the superconductivity of CsxWO3 prepared with 0.3≥x≥0.19 was a 3D superconductor, a transition from a metal to an insulator occurs at x < 0.19, and a 2D superconductor was formed at x=0.05. In addition, the hexagonal tungsten bronze phase of Cs0.33WO3 was regarded as being highly attractive in solar filter applications because of its strong absorption in the NIR wavelengths. So, as a dingal material, Cs0.33WO3 nano powder is often applied to produce different near-infrared shielding materials.
