Abstract
Electrochromic (EC) devices which can be operated at just low driven voltage of 0.2 V have been investigated. The EC devices consist of emeraldine salt (ES) form of polyanilne (PANI) LB films on the both of display and counter electrodes. Since ES can be oxidized or reduced to produce pernigraniline (PS) or leucoemeraldine salt (LES), respectively, each reaction takes place at the both electrodes and such a low driven voltage has been achieved. The color of the display electrode shows green at no bias and is turned to dark blue at the bias. The EC properties, which are contrast, response time, lifetime and memory effect was characterized.
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