Crystalline WO3 Film

Crystalline WO3 film is one type of tungsten trioxide thin film, and the other is an amorphous WO3 film. The crystalline tungsten oxide film and the amorphous one are electrochromic films. Experts said that the degree of crystallization has a certain influence on the electrochromism and other performance of tungsten oxide, such as modulation amplitude and color change efficiency. The specific impact is as follows:

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1.0 Due to the long-range order of the crystalline tungsten oxide film, the ion diffusion coefficient is limited, resulting in lower coloring efficiency.

2.0 The optical modulation amplitude of the thin film prepared at 350°C after the cycle of 200 times decreased from 62% to 50%. In addition, although there are data showing that the cyclic stability of the crystalline WO3 film is superior to that of the amorphous WO3 film, the cycle stability of the crystalline tungsten trioxide film still needs to be improved.

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