Tungsten Oxide Smart Glass

Tungsten oxide smart glass not only can adjust the transmittance in the visible light region, but also has a shielding effect on the infrared light in the colored state. This is because the electrochromic glass of tungsten oxide nano particles can actively block the heat loss caused by the indoor and outdoor temperature difference and reduce the energy consumption caused by building cooling and heating.

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Experts say that the term electrochromism was first proposed by J.R. Platt of the University of Chicago in 1961. It was not until 1969 that American scientist S.K. Deb first described the electrochromic phenomenon of amorphous tungsten trioxide film for the first time, and proposed the discoloration mechanism of "oxygen vacancy color center". Since then, as research has deepened, researchers have discovered a variety of new electrochromic materials, including transition metal oxides and a variety of conductive polymers. WO3 is one of the transition metal oxides.

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