Nonpolar Resistive Switching in Ag@TiO2 Core-Shell Nanowires
Citation:
Manning, Hugh G. and Biswas, Subhajit and Holmes, Justin D. and Boland, John J., Nonpolar Resistive Switching in Ag@TiO2 Core-Shell Nanowires, ACS Applied Materials \& Interfaces, 2017, nullDownload Item:
Abstract:
Nonpolar resistive switching (RS), a combination of bipolar and unipolar RS, is demonstrated for the first time in a single nanowire (NW) system. Exploiting Ag@TiO2 core–shell (CS) NWs synthesized by postgrowth shell formation, the switching mode is controlled by adjusting the current compliance effectively, tailoring the electrical polarity response. We demonstrate ON/OFF ratios of 105 and 107 for bipolar and unipolar modes, respectively. In the bipolar regime, retention times could be controlled up to 103 s, and in the unipolar mode, >106 s was recorded. We show how the unique dual-mode switching behavior is enabled by the defect-rich polycrystalline material structure of the TiO2 shell and the interaction between the Ag core and the Ag electrodes. These results provide a foundation for engineering nonpolar RS behaviors for memory storage and neuromorphic applications in CSNW structures.
Author's Homepage:
http://people.tcd.ie/jbolandDescription:
PUBLISHED
Author: BOLAND, JOHN
Type of material:
Journal ArticleCollections
Series/Report no:
ACS Applied Materials \& InterfacesAvailability:
Full text availableKeywords:
Nano-wireDOI:
http://dx.doi.org/10.1021/acsami.7b10666Metadata
Show full item recordLicences: