Nanostructured CeO₂ Thin Films Prepared by the Sol-Gel Dip-Coating Method with Anomalous Behavior of Crystallite Size and Bandgap

Figure 5

3D images of CeO₂ thin films sintered at different temperatures: (a) 250°C, (b) 450°C, and (c) 550°C.

(a)

(b)

(c)