Figure 4

Configurations of the engineered thermochromic coating & its major surface morphological characteristics. (a) Standard Single VO2 layer configuration & the current considered multi-layered structure consisting of V2O5(Fixed thickness:20 nm)/pure V (Variable thickness)/V2O5 (Fixed thickness:40 nm) deposited onto glass substrate, (b) Surface Atomic Force Microscopy surface morphology of the 3 multilayered samples, (c) Evolution of corresponding average roughness Ra (yellow filled circles), the root mean square (Rσ) (black filled circles), and the average crystallites size (Ø) (yellow filled diamonds).