Highly transparent and conductive three-dimensional ITO branches were used as a scaffold to improve the optical properties of electrochromic device (ECD). During the operation of ECD, Ag nanoparticles were spatially separated on ITO branches. This unique geometry of ITO branch and Ag nanoparticle showed a strong plasmonic light absorption, resulting in deep black state (average reflectance of 8.78%). Also, the ECD could reversibly switch the three states of transparent, mirror and black states for 10 000 cycles without degradation.
- Ki Ryong Jeong
- Illhwan Lee
- Jong-Lam Lee
