Abstract
We prepared an all-solid-state reflectance-type electrochromic device (ECD), consisting of the following five layers: Al/WO 3/Ta 2O 5/Ir x Sn 1 − x O 2/ITO. Using RF ion plating, we prepared a film containing dispersed iridium oxide in a tin oxide matrix; this film acts as the counter electrode in the all-solid-state ECD. Protons were used as coloration ions in the ECD. The size of the ECD was 150 cm 2, and the reflectance changed between more than 60% from 15%. The coloration and bleaching response times were less than a few seconds. We analyze the optical characteristics of the ECD, and report the results of a consecutive drive test and a high-temperature heat resistance test.
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