4.6 Article

Adjusting oxygen vacancy and resistance switching of InWZnO thin films by high-pressure oxidation technique

期刊

APPLIED PHYSICS LETTERS
卷 119, 期 17, 页码 -

出版社

AIP Publishing
DOI: 10.1063/5.0065269

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资金

  1. Ministry of Science and Technology, Taiwan (MOST) [MOST 1092221-E-009-160-MY3, MOST 110-2218-E-A49-012-MBK, MOST 110-2218-E-A49-013-MBK]

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The study proposed a room temperature high-pressure oxidation technique to manipulate the surface morphology and oxygen depth-profile of the InWZnO film, resulting in improved chemical properties. Devices treated with high-pressure oxidation exhibited uniform resistance states and set/reset repeatability compared to control devices. The mechanism of the effect of high-pressure oxidation treatment on the InWZnO film was comprehensively examined through material analysis and physical model discussions.
In this study, the room temperature high-pressure oxidation technique is proposed to exquisitely manipulate the surface morphology and oxygen depth-profile of the tungsten-doped indium zinc oxide (InWZnO) film, and its influence on the switching characteristics is emphasized. Based on the atomic force microscope analysis, the smoother surface morphology of the InWZnO film after the high-pressure oxidation treatment is observed. Moreover, it is observed that the InWZnO film has significantly manipulated the oxygen vacancy depth-profile and improved the chemical properties after high-pressure oxidation treatment, according to the x-ray photoelectron spectroscopy depth profiling results. Compared with the control device, the device with high-pressure oxidation treatment exhibited highly uniform resistance states and set/reset repeatability. Finally, the mechanism of the effect of high-pressure oxidation treatment on the InWZnO film is completely examined according to the in-depth material analysis and physical model discussed.

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