Figure 5
EL spectrum of n-ZnO/p-GaN and n-ZnO/NiO/p-GaN. (a) ZnO nanorods and (b) ZnO nanotubes. Insets show digital photographs of ZnO nanorod- and nanotube-based LEDs with NiO buffer layer.
Figure 5 | Nanoscale Research Letters
EL spectrum of n-ZnO/p-GaN and n-ZnO/NiO/p-GaN. (a) ZnO nanorods and (b) ZnO nanotubes. Insets show digital photographs of ZnO nanorod- and nanotube-based LEDs with NiO buffer layer.