Hydrothermal synthesis and memristive switching behaviors of single-crystalline anatase TiO2 nanowire arrays

A facile one-step hydrothermal method has been reported to prepare the single-crystalline anatase TiO2 nanowire arrays with (101) preferentially oriented on the FTO substrate. The as-prepared Au/TiO2 NWAs/FTO based device exhibits the nonvolatile bipolar memristive switching behaviors with a high HR...

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Bibliographic Details
Published in:Journal of alloys and compounds 2016-12, Vol.688, p.294-300
Main Authors: Yu, Zhiqiang, Qu, Xiaopeng, Yang, Weiping, Peng, Jing, Xu, Zhimou
Format: Article
Language:English
Subjects:
Hydrothermal synthesis
Memristive switching behaviors
Oxygen vacancies
Single-crystalline
TiO2 nanowire
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Summary:A facile one-step hydrothermal method has been reported to prepare the single-crystalline anatase TiO2 nanowire arrays with (101) preferentially oriented on the FTO substrate. The as-prepared Au/TiO2 NWAs/FTO based device exhibits the nonvolatile bipolar memristive switching behaviors with a high HRS/LRS resistance ratio of about three orders of magnitude. The memristive switching behaviors of the device have been elucidated by the Ohmic conduction mechanism and the trap-controlled space charge limited current conduction mechanism. Furthermore, the Schottky barriers modulated by the oxygen vacancies at the Au/TiO2 interface have been suggested to dominate the bipolar memristive switching behaviors of the device. This work demonstrates that the Au/TiO2 NWAs/FTO based device may be a promising candidate for memristor applications. •The single-crystalline anatase TiO2 NWAs have been prepared by hydrothermal method.•The PL spectra of single-crystalline antase TiO2 NWAs have been studied.•The Au/TiO2 NWAs/FTO based memristor has been prepared for the first time.•The bipolar memristive switching behaviors of the device have been discussed.•The memristive switching mechanisms of the device have been elucidated.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2016.07.216