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

Figure 2

Thickness (left axis) and crystallite size (CS) (right axis) versus . Red and blue lines indicate CS measured from (111) and (002) peaks. The inset illustrates a cartoon in which crystallites of the CeO₂ films show a tendency to be with a preferred orientation along the (111) direction.