Fig. 2From: Dip-Coating Process Engineering and Performance Optimization for Three-State Electrochromic Devices(Color online) Photographs of TiO2 thin films prepared with nanoparticle sizes of a 5~10, b 40, and c 100 nm, respectively. In-plane SEM images of TiO2 thin films prepared with nanoparticle sizes of d 5~10, e 40, and f 100 nm, respectively. Cross-sectional SEM images of TiO2 thin films prepared with nanoparticle sizes of g 5~10, h 40, and i 100 nm, respectivelyBack to article page