CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Resistive Switching Behavior in Amorphous Aluminum Oxide Film Grown by Chemical Vapor Deposition |
QUAN Xiao-Tong, ZHU Hui-Chao**, CAI Hai-Tao, ZHANG Jia-Qi, WANG Xiao-Jiao |
School of Electronic Science and Technology, Dalian University of Technology, Dalian 116024
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Cite this article: |
QUAN Xiao-Tong, ZHU Hui-Chao, CAI Hai-Tao et al 2014 Chin. Phys. Lett. 31 078101 |
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Abstract The repeatable bipolar resistive switching phenomenon is observed in amorphous Al2O3 prepared by metal-organic chemical vapor deposition on ITO glass, with ITO as the bottom electrode and Ag as the top electrode. The crystal structure, morphology, composition and optical properties of Al2O3 thin films are investigated by x-ray diffraction, x-ray photoelectron spectroscopy, atomic force microscopy and ultraviolet-visible-infrared spectroscopy, respectively. The electronic character of Ag/Al2O3/ITO structure is tested by an Agilent B1500A. The device shows a typical bipolar resistive switching behavior under the dc voltage sweep mode at room temperature. The variation ratio between HRS and LRS is larger than nearly three orders of magnitude, which indicates the good potential of this structure in future resistive random access memory (ReRAM) applications. Based on the conductive filament model, the high electric field is considered the main reason for the resistive switching according to our measurements.
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Published: 30 June 2014
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PACS: |
81.05.Gc
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(Amorphous semiconductors)
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81.15.Gh
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(Chemical vapor deposition (including plasma-enhanced CVD, MOCVD, ALD, etc.))
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85.30.De
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(Semiconductor-device characterization, design, and modeling)
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