Effect of ZnO Nanorod Arrays on the Output Performance of Piezoelectric Nanogenerator

In this study, ZnO nanorods were prepared by the hydrothermal method with and without ZnO crystal seed layer, and applied on piezoelectric nanogenerator. The results of SEM analysis reveal that the length of ZnO nanorods are 2.82 µm and 7.88 µm with and without ZnO crystal seed layer, respectively. The output performance of the piezoelectric nanogenerator were driven by ultrasonic waves device and measured by I-V characteristics instrument. The highest average current and voltage of nanogenerator were 1.34×10-8 A and 6.20×10-4 V without ZnO crystal seed layer, and were 2.54×10-8 A and 4.08 ×10-3 V with ZnO crystal seed layer, respectively.