Electrochromic Display Device Based on Amorphous WO3 and Solid Proton Conductor
- 1 March 1981
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 20 (3) , 581-586
- https://doi.org/10.1143/jjap.20.581
Abstract
An amorphous WO3 electrochromic display device (a-WO3ECD) employing a solid proton conductor was investigated. The resistivity of the solid proton conductor composed of p-toluenesulfonic acid (p-TsOH) and urea (1.2:1 in molar ratio) was 102∼103 Ω cm at a relative humidity of 60% (20°C). The a-WO3ECD using the mixture of p-TsOH/urea and glycerin (20 wt.%) exhibited satisfactory EC performances such as response time (0.4 s) and open-circuit memory (over 2 hours). The most attractive feature of the ECD was an excellent visual appearance in a white and diffuse background of the solid electrolyte layer.Keywords
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