Fig. 3From: Dip-Coating Process Engineering and Performance Optimization for Three-State Electrochromic Devices(Color online) AFM images of TiO2 thin film prepared with nanoparticle sizes of a 5~10, b 40, and c 100 nm and d roughness of TiO2 thin film as a function of TiO2 nanoparticle sizeBack to article page