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.
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The experts also introduced that tungsten bronze is found to show a superior near-infrared shielding characteristic when dispersed as nanoparticles. Especially, hexagonal tungsten bronzes have been found to exhibit the highest transparency in visible light region in addition to the strong and wide-banded near-infrared absorption. When elements with large ionic radius such as alkali metals (potassium, rubidium and cesium) and alkali earth metals (strontium and barium) are doped to tungsten trioxide, a hexagonal structure tends to be formed. In a word, the transparent thermal insulating glass coating prepared using Cs0.33WO3 as near-infrared absorbing material has the highest visible light transparency and strong near-infrared absorption performance.
