fig3

Figure 3. Graphene/ZnO QD photodetector. (A) Photocurrent response under UV and visible illumination (VDS = 0.2 V and VG = 0 V). Time-dependent photoresponse of photodetector under (B) 460 and (C) 365 nm illumination (VDS = 0.2 V and VG = 0 V).