Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/4998
Title: Fabrication and characterization of TiOx based single-cell memristive devices
Authors: Özkal, Bünyamin
Kazan, Sinan
Karataş, Özgül
Ekinci, Gökhan
Arda, Lütfi
Rameev, Bulat Z.
Keywords: memristor
resistive switching
generalized memristor model
TiO2
PLD
XPS
PL
Thin-Films
Switching Properties
Oxide-Films
Photoluminescence
Deposition
Morphology
Memory
Issue Date: 2023
Publisher: Iop Publishing Ltd
Abstract: Nowadays, remarkable progress has been observed in research into neuromorphic computing systems inspired by the human brain. A memristive device can behaviorally imitate the biological neuronal synapse therefore memristor-based neuromorphic computing systems have been proposed in recent studies. In this study, the memristive behaviors of titanium dioxide sandwiched between two platinum electrodes were investigated. For this purpose, three SiO2/Pt/TiOx/Pt thin films with 7.2 nm, 40 nm, and 80 nm TiOx metal-oxide layers were fabricated using a pulsed laser deposition technique. The fabrication process, structural properties, photoluminescence properties and electrical transport characterization of each thin film have been investigated. All thin films were analyzed in terms of the film stoichiometry and degree of oxidation using high-resolution x-ray photoelectron spectroscopy. By measuring the layer thickness, density, and surface roughness with the x-ray reflectivity technique, by analyzing the structural defects with photoluminescence spectroscopy and by characterizing the quasi-static electrical properties with the conventional two probes technique, we have shown that the fabricated memristive devices have bipolar digital switching properties with high ROFF/RON ratio. This type of switching behavior is applicable in random access memories. Experimental current-voltage behavior in the form of pinched hysteresis loop of the films have been modelled with generalized memristor model.
URI: https://doi.org/10.1088/2053-1591/ad1125
https://hdl.handle.net/20.500.13091/4998
ISSN: 2053-1591
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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