Resistive switching behaviors of ZnO nanorod layers

Wen-Yuan Chang; Chin-An Lin; Jr-Hau He; Tai-Bor Wu
June 2010
Applied Physics Letters;6/14/2010, Vol. 96 Issue 24, p242109
Academic Journal
We have fabricated vertically aligned ZnO nanorod layers (NRLs) on indium tin oxide (ITO) electrodes using a hydrothermal process. The Pt/ZnO NRL/ITO capacitor exhibits bipolar resistive switching behavior. The resistive switching behavior may be related to the oxygen vacancies and/or zinc interstitials confined on the surface of the ZnO NRs, giving rise to the formation of straight and extensible conducting filaments along each vertically aligned ZnO NR. Superior stability in resistive switching characteristics was also observed, demonstrating that ZnO NRLs have the potential for next-generation nonvolatile memory applications.


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