期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 862, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.158035
关键词
Memristor; Conduction mechanism; Space-charge limited conduction; Doping effect; ReRAM
资金
- Key project's funding of NSFC [61836010]
- National Key Research and Development Program of China [2019YFB2204600, 2019YFB2205001, 2019YFB2205005]
- National Natural Science Foundation of China [11874310, 11675134]
Nanoscale non-volatile memory technology shows promise for in-memory computing and neuromorphic computing, but further understanding of charge transport and resistive switching mechanisms in memristor devices is needed. A study on MoO3 nanorods revealed improved device performance through analysis of resistive switching behavior and conductive mechanisms. Silver doping into the MoO3 structures showed enhanced bipolar resistive switching performance in the devices.
As an emerging technology, nanoscale non-volatile memory technology can be used for in-memory computing and neuromorphic computing. However, the deeper understanding of the charge transport and resistive switching mechanism in memristor devices are still needed to improve the device properties for practical application. Herein, we first synthesized the MoO3 nanorods and studied the structural properties by XRD, SEM and TEM. The elemental compositions were confirmed through EDX and XPS analysis. The resistive switching operation of Au/ MoO3/p-Si ReRAM device was examined and its conductive mechanism was analyzed by space-charge limited conduction theory. The changes of high resistive state to low resistive state and vice-versa in ReRAM device is owing to the movement of oxygen vacancies in MoO3 structure. For comparison, silver atoms were intercalated into MoO3 Nanostructures and device performance was also analyzed. The improved switching behavior of Ag doped Au/ MoO3/p-Si device is due to Ag doping effect in the formation of conducting paths in the MoO3 active material. The obtained results indicate the contribution of Ag atoms in conduction filament enhance the bipolar resistive switching performance. (C) 2020 Elsevier B.V. All rights reserved.
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