As a new type of environmentally friendly near-infrared shielding material, cesium tungsten bronze is considered to be the most suitable energy-saving material for producing automotive glass windows or glass windows, doors or glass curtain walls of the buildings.
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In the hot summer, CsxWO3 can shield near-infrared light and transmit visible light, thus greatly reducing the amount of sunlight radiated into the room and the interior of the car, and also meets the needs of daylighting and driving sight. In the winter, the indoor heat radiation can be stored inside, which plays a role of heat preservation, reduces the use of heating equipment, and meets the requirements of energy saving. In this regard, experts say that the near-infrared shielding effect of the material is derived from the reflection and absorption of the material itself. The better the near-infrared shielding performance, the stronger the thermal insulation effect. The free carrier concentration is used to control the natural frequency of the plasma vibration of the material, thereby controlling the absorption and reflection properties of the material, and finally obtaining the desired optical material. At present, doping is the main way of changing the free carrier concentration. That is to say, by doping, cesium tungsten bronze can become a dingal material with better near-infrared shielding performance.
