Microstructure control of NiO-based ion storage layer with various sized NiO particles to evaluate the electrochromic performance

Abstract

We have investigated the relationship between the crystalline size of the ion storage layer and the electrochromic performance. The electrochromic device was fabricated with a WO3 thin film and NiO-based ion storage layer. The electrochromic performance of the device was evaluated for various morphologies of the ion storage layer, with varying size of NiO powders using a kinetically sprayed process. The ion storage layer having the smallest crystalline size using micron-sized NiO powder, had improved initial transmittance and electrochemical reaction of electrochromic performance