Cs0.33WO3, or cesium tungsten bronze, for transparent thermal insulating glass coating is obtained by doping WO3 with Cs element. According to the experts, cesium tungsten bronze is also known as cesium-doped tungsten oxide, which is a typical alkali-doped conductive phase, and belongs to a family of so-called tungsten bronze.

Cesium tungstate for preparing smart glass thermal insulating coating is mainly hexagonal Cs0.33WO3 with excellent near-infrared absorption performance that can be synthesized by a facile molten-salt route. For example, some experts have prepared hexagonal Cs0.33WO3, Rb0.33WO3 and K0.30WO3 crystals by a facile molten-salt route.

Cs0.33WO3, or cesium tungsten bronze, for preparing near-infrared absorption film is mainly at the nanoscale. According to the experts, the NIR absorption property of Cs0.33WO3 nano particles depends on the amount of cesium. And a proper Cs doping will give cesium tungsten bronze the most efficient absorption in the NIR region.

Cesium tungsten oxide such as Cs0.33WO3 nano powder is usually applied for preparing thermal insulating glass coating due to its excellent near-infrared shielding ability. Such an excellent property makes Cs0.33WO3 to become a superior candidate in heat shielding and energy saving. Wherein, the Cs0.33WO3 coating with high visible light transmittance is prepared from Cs0.33WO3 colloidal solution.