Fig. 3From: High-Performance Ultraviolet Photodetector Based on Graphene Quantum Dots Decorated ZnO Nanorods/GaN Film Isotype Heterojunctionsa TEM image of a representative GQDs/ZnO nanorod (inset: HRTEM image of the green circle in (a)). b UV-DRS absorption spectra of the GQDs/ZnO nanorods, bare ZnO nanorods, and PMMABack to article page