Energy Efficient Electrochromic Windows Prepared with Dual WO3-layered Electrodes

Abstract

An energy efficient dual-WO3 electrode was fabricated for electrochromic window application. A vapor-coated WO3 was prepared using the sputtering deposition method, and a wet-coated WO3 film was prepared with the wet chemical reaction process. The WO3 was amorphous crystalline. The intercalated charge of the electrode with a dual-WO3 layer was 0.0265 C/cm². High contrast ratio of 55.8% and fast responses of 6 s for charge intercalation and 1.8 s for deintercalation were achieved.