Electromechanical Characteristics of ZnO:Al Nanorods

In this study, we explore the effect of aluminum doping on the mechanical, piezoelectric, and semi-conductive properties of zinc oxide (ZnO) nanorods using scanning probe microscopy. The results show that the size of ZnO:Al nanorods can be changed by tuning the dopant concentrations during nanorod growth. The average surface potentials of the samples were -42.2 similar to 34.4 mV. Single nanorod bending generation output surface potentials were 0.05 similar to 0.08 V. The power density per unit substrate area was 0.72 nW/mm(-2) for a device outputting ultrasonic wavelengths.