F-doped cesium tungsten bronze has special optical properties such as photochromism, electrochromism and selective transmission of spectra so that it can be used to produce infrared ultraviolet shielding material for energy conservation in smart buildings. But why doped cesium tungsten bronze has these special optical properties? The special optical properties of cesium tungsten bronze doped with F atoms are due to its special tunnel structure and special carrier transport characteristics.
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Wherein, the so-called selective transmission of spectra is mainly to adjust the concentration of carriers in the F doped cesium tungsten bronze to absorb light of different wavelength bands, which is an important property discovered in recent years. And the color of F doped cesium tungsten bronze can be adjusted by changing the amount of metal ion Cs+. That is because the discoloration behavior is derived from the irreversible incorporation behavior of large-radius metal ions Cs+ in fluorine-doped cesium tungsten bronze.
