Figure 6

Cross-sectional images and spectra of the Cs _0.33 WO ₃ -coated films. The cross-sectional SEM and TEM images of the Cs_0.33WO₃- coated film fabricated by composite layer (a, b) and double layer coating method (c, d) and spectra of the films fabricated by different methods from UV to NIR region (e), respectively.