Photoelectric Performance Optimization of Dye-Sensitized Solar Cells Based on ZnO-TiO₂ Composite Nanofibers

Figure 4

XRD patterns of TiO₂ nanofibers and ZnO-TiO₂ composite nanofibers with molar ratios of 1 : 4, 1 : 2, 1 : 1, 2 : 1, and 4 : 1.