Abstract
Abstract Synapse is not merely the connection of two adjacent neurons in the human brain but also the fundamental structure for information transmission in an ever-changing pattern. Therefore, the hardware implementation of artificial synapses/neurons with intriguing spatiotemporal-processed functions is of great significance for brain-like intelligent electronics. Herein, bidirectionally-trigged coplanar-gate electric-double-layer two-dimensional (2D) MoS2 neuromorphic transistors with complementary spatiotemporal learning abilities are successfully demonstrated through the laterally-coupled and proton-conducting poly (vinyl alcohol) electrolytes. The fundamental bidirectional neuromorphic behaviors such as excitatory and inhibitory postsynaptic current (EPSC, IPSC), excitatory and inhibitory paired-pulse facilitation (E-PPF, I-PPF), and bidirectional frequency-dependent dynamic filtering from high-pass to low-pass transitions were successfully mimicked. Most importantly, for the first time, with the multi-coplanar-gates as inputs, the complementary spatiotemporal learning and anti-spatiotemporal learning, and bidirectional tunable spiking logic dynamics were experimentally demonstrated. Our results could provide a promising opportunity for adding the intelligent complementary spatiotemporal-learning functions in brain-like 2D nanoscale bioelectronics.
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