▎ 摘　　要

In this report, a reduced graphene oxide (rGO)/ZnO nanorod hybrid structure was proposed, benefiting from high photosensitivity and piezoelectric properties of ZnO nanorods, besides excellent carrier mobility, high optical transparency, and mechanical flexibility of the reduced graphene oxide sheets. Compared with the pristine ZnO nanorod-based structure, it was shown that the proposed hybrid photodetector exhibited improved output sensitivity to UV-illumination (Delta I/I = 424). In addition, by taking advantage of the coupled semiconducting/piezoelectric properties of ZnO nanorods, the application of the proposed hybrid rGO/ZnO nanorod structure as a photosensitive piezoelectric nanogenerator was demonstrated. In this regard, enhanced open circuit voltage (1.5 V) and open circuit sensitivity (Delta V-oc/V-oc = -0.66%), besides a faster photoresponse, were achieved for the realized rGO/ZnO hybrid structure in comparison with ZnO nanorod-based counterpart,. The observed enhancements were attributed to the presence of underlying reduced graphene oxide sheet as an efficient carrier transport layer in the proposed hybrid structure. (C) 2018 Sharif University of Technology. All rights reserved.