Piezo-phototronic Effect

nO nanowires (NWs) have attracted a great deal of interest because of their unique semiconducting, piezo-electric, biocompatible, and optoelectronic properties, which are fundamental for their application in electronics, optoelectronics, biology, environmental science, and energy.13 In the past decade, a large vari-ety of functional ZnO NW devices, such as field effect transistors,2,4 optically pumped lasers,57 chemical and biological sensors,8,9 light emitting diodes,10,11 solar cells,12,13 photodetectors,1418 have been demon-strated. Recently, by utilizing the coupling of piezoelectric and semiconducting prop