Study of complementary electrochromic devices

• Main Authors: Shih, Tai-Yu, 施泰宇
• Other Authors: 王志明
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/74660837818856280966

碩士 === 正修科技大學 === 電機工程研究所 === 97 === In this study, electrochromic MoO3 (Cathodic coloration) and NiO (Anodic coloration) thin films were be deposited on the ITO/Glass substrates by electron beam evaporation, respectively. The effects of the various colored voltages and the electrolytes on the electrochromic properties of complementary electrochromic device (CECD) are investigated. The memory effect and energy-saving efficiency of CECD are also discussed and estimated. Experimental results reveal that the optimum electrochromic CECD biased with a colored voltage of 1.5 V exhibits a transmittance variation (ΔT%) of 54.99%, an optical density change (ΔOD) of 0.878, an intercalation charge (Q) of 14.33 mC/cm2 and a coloration efficiency (η) of 61.33 cm2/C at a wavelength (λ) of 550 nm. Besides, when the liquid electrolyte was adopted as ion conducting layer in CECD, it shows a better open-circuit memory effect that the colored transmittance were below 20% in 24 h. However, when the gel polymer electrolyte was used, the η value decreased to 54.79 cm2/C and colored transmittance increased significantly with time. In addition, most optical energy can be filtered when the liquid electrolyte or the gel polymer electrolyte were used at colored state, and the optical energy of 37 W/m2 and 32.1 W/m2 was adjusted at λ from 380 nm to 780 nm, respectively.