Improvement of Durability of Electrochromic Switchable Mirror in Environment

Abstract

A durability of an electrochromic switchable mirror glass was evaluated in the accelerated degradation test with a constant temperature of 40°C and a relative humidity of 80% for improvement of the durability in the environment. A fluorocarbon polymer was also developed as a surface coating layer of the device to avoid environmental negative impact. Although the conventional device without surface coating rapidly degraded in the test, the device with surface coating exhibited high durability under high temperature and high relative humidity conditions and excellent optical switching properties with high transmittance of around 52.2% in the transparent state. Therefore, we achieved to develop the device with high durability in the environment.