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    • A Charge Trap Based MoSe2 Device Emulating Bio-Realistic Synaptic Functionalities

    Tamkeen Farooq,Sumit Sharma,Shubham Bhatt,Samaresh Das,Rahul Mishra

    JOURNAL OF PHYSICS D-APPLIED PHYSICS（2025）

    Indian Inst Technol Delhi

    Cited 0|Views4
    Abstract
    Synaptic devices based on two-dimensional (2D) materials are promising toward the development of high-performance and low-power neuromorphic systems. In this study, we report a single-channel, three-terminal-based nonvolatile and multistate device based on 2D MoSe2. The device operates on the principle of trapping and detrapping of electrons at the MoSe2/SiO2 interface, in response to an applied gate voltage, resulting in a nonvolatile modulation of the threshold voltage. The memory behavior is highly reproducible as verified for around 100 cycles of the gate voltage sweep. The multistate behavior of the MoSe2 device was exploited to demonstrate the characteristics of the biological synapse. The device exhibits various synaptic functions, such as potentiation, depression, spike rate-dependent plasticity, spike magnitude-dependent plasticity, and the ability to transition from short-term to long-term memory. The bio-realistic synaptic behavior of the MoSe2 device underscores its promising potential for neuromorphic hardware.
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    MoSe2,bio-realistic,charge trap device,2d neuromorphic device
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