Abstract
In this work, TiO2 nanotubes were directly grown by one-step electrochemical deposition process, in the absence of any templates or metal Ti substrates. The Au/TiO2 nanotube/fluorine-doped tin oxide glass capacitor exhibits stable bipolar resistive switching behaviour. The resistive switching behaviour may be related to the oxygen vacancies, giving rise to the formation of straight and extensible conducting filaments along the wall of each vertically aligned TiO2 nanotube. Superior stability in resistive switching characteristics was also observed, indicating that TiO2 nanotubes are one of the potential materials for next-generation nonvolatile memory applications.
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