Doped Tungsten Oxide Thin Film

Doped tungsten oxide thin film is an electrochromic film that can be prepared by multi-doping modification of the WO3 film. So, what substances can be selected as dopants?

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PEO and MoO3, etc. Experts said that the addition of PEO can not only improve the stabilization time of the sol, but also accelerate the ion conduction rate and improve the response speed of the film, which is beneficial to the formation of a large pore size WO3 film during the heat treatment process, thereby improving the discoloration performance. The addition of MoO3 is beneficial to the stability of the tungstic acid sol system. MoO3 can significantly increase the gelation time, increase the cycle life of the electrochromic film, and improve the stability of electrochromism, so that it has good electrochromic effect in the visible range. And the transmittance of light of the prepared film can be continuously adjusted over a wide range. Also, the response speed is fast and the coloring efficiency is high.

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