Technical Objectives and Approach
Principle of Electrochromism
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Electrochromism involves electroactive materials that show a reversible colour change when a small DC voltage is applied. The potential causes redox reactions to take place in the electrochromic and ion storage layers, a process which is accompanied by ion migration across the ion-conducting layer to achieve charge compensation. The material and physical composition of electrochromic devices can vary strongly. |
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| Colour change of an all-plastic electrochromic device. Left picture: Blue-coloured state; Right picture: Transparent state. | |
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| Flexibility of an all-plastic electrochromic device. | |
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All photographs
by courtesy of
CIDETEC, San Sebastian, Spain.
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