Electrochromic Devices Based on Porous Tungsten Oxide Thin Films

Figure 7

Transmission spectra of the EC devices constructed using h-WO₃, m-WO₃, and o-WO₃ in the as prepared state, at coloration potential of 2.5 V and at bleaching potential of −1.0 V. The photos show the visible coloration to the naked eye when the EC devices are colored at various coloration potential. The photos represent typically the EC device based on m-WO₃.

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