Huh, Woong Lee, Donghun Jang, Seonghoon Kang, Jung Hoon Yoon, Tae Hyun So, Jae-Pil Kim, Yeon Ho Kim, Jong Chan Park, Hong-Gyu Jeong, Hu Young Wang, Gunuk Lee, Chul-Ho 2024-01-19T09:30:10Z 2024-01-19T09:30:10Z 2023-11-15 2023-06 0935-9648 https://pubs.kist.re.kr/handle/201004/113613 Heterosynaptic neuromodulation is a key enabler for energy-efficient and high-level biological neural processing. However, such manifold synaptic modulation cannot be emulated using conventional memristors and synaptic transistors. Thus, reported herein is a three-terminal heterosynaptic memtransistor using an intentional-defect-generated molybdenum disulfide channel. Particularly, the defect-mediated space-charge-limited conduction in the ultrathin channel results in memristive switching characteristics between the source and drain terminals, which are further modulated using a gate terminal according to the gate-tuned filling of trap states. The device acts as an artificial synapse controlled by sub-femtojoule impulses from both the source and gate terminals, consuming lower energy than its biological counterpart. In particular, electrostatic gate modulation, corresponding to biological neuromodulation, additionally regulates the dynamic range and tuning rate of the synaptic weight, independent of the programming (source) impulses. Notably, this heterosynaptic modulation not only improves the learning accuracy and efficiency but also reduces energy consumption in the pattern recognition. Thus, the study presents a new route leading toward the realization of highly networked and energy-efficient neuromorphic electronics. English WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Heterosynaptic MoS2 Memtransistors Emulating Biological Neuromodulation for Energy-Efficient Neuromorphic Electronics Article 10.1002/adma.202211525 1 Advanced Materials, v.35, no.24 Advanced Materials 35 24 N scie scopus 000977955100001 2-s2.0-85154041859 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article CHARGE-LIMITED CURRENTS MEMRISTOR SYNAPSE DEVICE 2D materials memtransistors neuromorphic electronics transition metal dichalcogenides