Table of Contents
Materials, Volume 12, Issue 14 (July-2 2019)
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Cover Story (view full-size image) Native point defects exist inside as well as on the surface of ZnO nanowires that are electrically [...] Read more. Native point defects exist inside as well as on the surface of ZnO nanowires that are electrically active. Applied electric fields can move them between electrodes spaced microns apart even at room temperature. Hyperspectral imaging with cathodoluminescence spectroscopy reveals how electric fields sweep these defects out of the nanowire, accumulating underneath one of the electrodes. These movements change the nanowire’s conductivity trapping and recombination, the contacts’ depletion regions, and the resultant Schottky barrier or ohmic behavior. The ability to measure as well as manipulate defects presents exciting possibilities for future ZnO nanoscale electronics. View this paper.