Scheme 2From: High-Performance Ultraviolet Photodetector Based on Graphene Quantum Dots Decorated ZnO Nanorods/GaN Film Isotype Heterojunctionsa The schematic diagrams of the ZnO NRs/GaN UV photodetector decorated without and with GQDs. b Energy band diagram of the GQD-ZnO NRs composite and its carrier transport mechanism in the interfacial region irradiated by UV lightBack to article page