Photoinduced Nonvolatile Resistive Switching Behavior in Oxygen-Doped MoS<sub>2</sub> for a Neuromorphic Vision System
Ke Chang, Xinhui Zhao, Xinna Yu, Zhikai Gan, WANG REN-ZHI, Anhua Dong, Zhuyikang Zhao, Yafei Zhang, Hui Wang
Abstract
Controlling resistance by external fields provides fascinating opportunities for the development of novel devices and circuits, such as temperature-field-induced superconductors, magnetic-field-triggered giant magnetoresistance devices, and electric-field-operated flash memories. In this work, we demonstrate a light-triggered nonvolatile resistive switching behavior in oxygen-doped MoS 2 . The two-terminal devices exhibit stable light-modulated resistive switching characteristics and optically tunable synaptic properties with an on/off ratio of up to 10 4 . The integrated device with crossbar architecture enables simultaneous image sensing, preprocessing, and storage in a single device, thereby increasing the training efficiency and recognition rate of image recognition tasks. This work presents a novel pathway to develop the next generation of light-controlled memory and artificial vision systems for neuromorphic computing.