GENERAL DESIGN EQUATIONS FOR THE OPTIMIZATION OF COMPLEMENTARY ELECTROCHROMIC DEVICES

摘要

The optical attenuation of complementary electrochromic devices (ECDs) with two reversible electrodes operating in tandem is presented. The transmittances of electrochromic (EC) thin film electrodes are related to the electrochemical and optical properties of each coated EC layer. By combining the electrochemical and optical properties of these two electrodes, a general variable transmittance function suitable for describing the switching characteristics of a complementary ECD is developed. The concept of the limiting electrode is utilized to derive the design equations for the complementary thin-film ECDs. The optimum design curves provide designers with different options to seek suitable parameters for the desired EC performance. The optical attenuation of a complementary ECD consisting of a WO_3/polyaniline couple is tested to see if the proposed model is valid.