Nanostructured ZnO, TiO₂, and Composite ZnO/TiO₂ Films for Application in Dye-Sensitized Solar Cells

Figure 1

SEM images of semiconductor films. Images are magnified ×300. The bar at the bottom right of the figures is 20 μm.

(a) ZnO/TiO₂ (90/10)

(b) ZnO/TiO₂ (75/25)

(c) ZnO/TiO₂ (25/75)