Manipulation of current rectification in van der Waals ferroionic CuInP2S6

Xingan Jiang, Xueyun Wang (), Xiaolei Wang (), Xiangping Zhang, Ruirui Niu, Jianming Deng, Sheng Xu, Yingzhuo Lun, Yanyu Liu, Tianlong Xia, Jianming Lu and Jiawang Hong ()
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Xingan Jiang: Beijing Institute of Technology
Xueyun Wang: Beijing Institute of Technology
Xiaolei Wang: Beijing University of Technology
Xiangping Zhang: Beijing Institute of Technology
Ruirui Niu: Peking University
Jianming Deng: Beijing Institute of Technology
Sheng Xu: Renmin University of China
Yingzhuo Lun: Beijing Institute of Technology
Yanyu Liu: Beijing Institute of Technology
Tianlong Xia: Renmin University of China
Jianming Lu: Peking University
Jiawang Hong: Beijing Institute of Technology

Nature Communications, 2022, vol. 13, issue 1, 1-8

Abstract: Abstract Developing a single-phase self-rectifying memristor with the continuously tunable feature is structurally desirable and functionally adaptive to dynamic environmental stimuli variations, which is the pursuit of further smart memristors and neuromorphic computing. Herein, we report a van der Waals ferroelectric CuInP2S6 as a single memristor with superior continuous modulation of current and self-rectifying to different bias stimuli (sweeping speed, direction, amplitude, etc.) and external mechanical load. The synergetic contribution of controllable Cu+ ions migration and interfacial Schottky barrier is proposed to dynamically control the current flow and device performance. These outstanding sensitive features make this material possible for being superior candidate for future smart memristors with bidirectional operation mode and strong recognition to input faults and variations.

Date: 2022
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DOI: 10.1038/s41467-022-28235-6

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