Abstract
The development of high-performance neuromorphic phototransistors is of paramount importance for image perception and depth memory learning.Here,based on metal-oxide heterojunction architecture,artificial synaptic phototransistors with synaptic plasticity have been achieved,demonstrating an arti-ficial synapse that integrates central and optic nerve functions.Thanks to the sensitive light-detection properties,the optical power consumption of such photonic artificial synapses can be as low as 22 pico-joules,which is extremely competitive compared with other pure metal oxide photoelectric synapses ever reported.What is more,owing to its good short-term(STP)and tunable amplitude-frequency character-istics,the as-constructed device can function as a biomimetic high-pass filter for picture edge detection.Dual-mode synaptic modulation has been performed,combining photonic pulse with gate voltage stim-ulus.After photoelectric-synergistic modulation,the high synaptic weights enable the device to simulate complex neural learning rules for neuromorphic applications,including gesture recognition,image per-ception in the visual system,and classically conditioned reflexes.These results suggest that the current oxide-based heterojunction architecture displays potential application in future multifunction neuromor-phic devices and systems.
基金项目
National Natural Science Foundation of China(11774001)
National Natural Science Foundation of China(52202156)
National Natural Science Foundation of China(52103297)
Anhui Project(Z010118169)
Scientific research project of colleges and universities in Anhui Province(2022AH050113)
University Synergy Innovation Program of Anhui Province(GXXT-2022-012)
Postdoctoral daily public startup funds of Anhui University(S202418001/069)
NETL
NSTL
万方数据