Zno Nanorod From Structure, Properties to Applications

Abstract

This paper aims to review current understandings of ZnO Nanorods (NRs) and summarizes them into a clear pathway from structure to properties and to applications. The crystal structure of ZnO NRs is a hexagonal wurtzite structure with asymmetry giving rise to its prominent piezoelectric property. Using methods such as AFM, researchers have confirmed and modeled the piezoelectric potential generated by ZnO NRs in deformation, and the intensity of the potential is strongly correlated with resistivity and dimensions of NRs. Several techniques, such as doping, are invented to enhance the piezoelectric intensity of ZnO NRs, suppressing the screening effect of ZnO NRs. Recent research has shown potential applications based on the piezoelectric property of ZnO NRs or nanowires (NWs) as nanogenerators (NGs) or nanosensors for self-powered devices in a range of areas.