期刊
SOLID-STATE ELECTRONICS
卷 194, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.sse.2022.108386
关键词
Electric-double-layer transistor; Multiterminal gates; Synaptic weights; Spike-timing-dependent plasticity learning rules
资金
- National Natural Science Foundation of China [52172169]
This paper demonstrates a multiterminal in-plane-gate ionic MoS2 transistor with dynamic synaptic characteristics, using poly (vinyl alcohol) as the laterally coupled proton-conducting electrolyte. The device successfully mimics typical synaptic behaviors and shows the ability of the multiterminal coplanar transistor to regulate synaptic weights depending on spatial orientation, as well as realizing orientation-dependent spike-timing-dependent plasticity learning rules.
Synaptic devices with dynamic properties are essential for constructing a neuromorphic system. In this paper, a multiterminal in-plane-gate ionic MoS2 transistor with dynamic synaptic characteristics is demonstrated by using poly (vinyl alcohol) as the laterally coupled proton-conducting electrolyte. The device can be regulated at a low operating voltage of 2 V due to the significant electric-double-layer effect. Typical synaptic behaviors such as excitatory postsynaptic current, inhibitory postsynaptic current, paired-pulse facilitation, and dynamic filtering are successfully mimicked. The ability of multiterminal coplanar transistor to regulate synaptic weights depending on spatial orientation is also demonstrated in this device. More importantly, orientation-dependent spike-timing-dependent plasticity learning rules can be successfully realized through this multiterminal ionic transistor. Such device may provide a promising way to construct spatiotemporally-correlated neuromorphic systems.
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