Mo-doping Tungsten Oxide Film Applied for Electrochromic Smart Window

Mo-doping tungsten oxide film for electrochromic smart window is a tungsten oxide - molybdenum oxide composite electrochromic film. Experts have found that the Mo-doped tungsten electrochromic film has better response time and coloring efficiency than pure tungsten oxide electrochromic film.

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The response time, one of the most important properties of electrochromic device, refers to the time during which the electrochromic device is switched between two color states (colored state and bleached state).

Coloring efficiency is generally a comprehensive parameter of the performance of an electrochromic device, which is primarily determined by the optical modulation range and photo response time of the device. The so-called optical modulation range is that the optical absorbance change obtained by injecting a certain amount of charge per unit area. It is mainly calculated by the following formula: ΔOD=log(Tb/Tc)(λ)=ΔOD(λ)/ΔQ

Wherein Tb and Tc correspond to the optical transmittance of the colored and bleached states of the electrochromic device, respectively, and Q represents the charge density.

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