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Published on: May 13, 2020
Photoinduced Nonvolatile Resistive Switching Behavior in Oxygen-Doped MoS2 for a Neuromorphic Vision System
Ke Chang1,2, Xinhui Zhao1,2, Xinna Yu3
1State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
Researchers developed light-triggered memory devices using oxygen-doped molybdenum disulfide (MoS2). These novel devices enable efficient image sensing, processing, and storage for advanced neuromorphic computing systems.
Area of Science:
- Materials Science
- Nanotechnology
- Device Physics
Background:
- External field control of resistance is key for novel electronic devices.
- Existing devices include superconductors, magnetoresistance, and flash memories.
Purpose of the Study:
- To demonstrate light-triggered nonvolatile resistive switching in oxygen-doped MoS2.
- To explore optically tunable synaptic properties for neuromorphic applications.
Main Methods:
- Fabrication of two-terminal devices using oxygen-doped MoS2.
- Characterization of light-modulated resistive switching and synaptic behavior.
- Integration of devices in a crossbar architecture for image sensing and storage.
Main Results:
- Stable, light-triggered nonvolatile resistive switching observed.
- Optically tunable synaptic properties with an on/off ratio up to 10^4.
- Integrated devices achieved simultaneous image sensing, preprocessing, and storage.
Conclusions:
- Oxygen-doped MoS2 offers a new platform for light-controlled memory.
- The developed devices enhance training efficiency and recognition rates in image tasks.
- This work paves the way for next-generation light-controlled memory and artificial vision systems for neuromorphic computing.
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