Neuromorphic computing vision is the most promising technological solution to overcome the arithmetic bottleneck in machine vision applications.All-in-one neuromorphic sensors have been attracting increased attention ...Neuromorphic computing vision is the most promising technological solution to overcome the arithmetic bottleneck in machine vision applications.All-in-one neuromorphic sensors have been attracting increased attention because they can integrate visual perception,processing,and memory functionalities into one single device.However,the limited responsivity and data retention time of all-in-one neuromorphic sensors usually hinder their potential in multispectral machine vision,especially in the near-infrared(NIR)band which contains critical information for pattern recognition.Here,we demonstrate physisorption-assistant optoelectronic synaptic transistors based on Ta_(2)NiSe_(5)/SnS_(2) heterojunction,which present tunable synaptic functionality in broadband(375–1310 nm).We propose a strategy about the physisorption-assistant persistent photoconductivity(PAPPC)effect to effectively solve the problem in detecting and storing the NIR light information.Under this strategy,the responsivity and data retention time of our devices were significantly enhanced and prolonged in broadband from 375 to 1310 nm.Further,the devices realize multilevel non-volatile optoelectronic memory through the modulation of several optical and back-gate signals to simulate emotion-controlled learning and memory processes,optical writing-electric erasing,and associative learning.Moreover,we developed a simplified human visual system to simulate color-cognitive perception and memory functions.Our approach offers a route for creating advanced all-in-one neuromorphic sensors and developing neuromorphic computing vision.展开更多
基金support from the National Natural Science Foundation of China(grant Nos.62334010,62121005,62022081,and 62304221)the National Key Research and Development Program(grant number 2021YFA0717600)+1 种基金the Natural Science Foundation of Jilin Province(20240101377JC)the International Fund Program of Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences.
文摘Neuromorphic computing vision is the most promising technological solution to overcome the arithmetic bottleneck in machine vision applications.All-in-one neuromorphic sensors have been attracting increased attention because they can integrate visual perception,processing,and memory functionalities into one single device.However,the limited responsivity and data retention time of all-in-one neuromorphic sensors usually hinder their potential in multispectral machine vision,especially in the near-infrared(NIR)band which contains critical information for pattern recognition.Here,we demonstrate physisorption-assistant optoelectronic synaptic transistors based on Ta_(2)NiSe_(5)/SnS_(2) heterojunction,which present tunable synaptic functionality in broadband(375–1310 nm).We propose a strategy about the physisorption-assistant persistent photoconductivity(PAPPC)effect to effectively solve the problem in detecting and storing the NIR light information.Under this strategy,the responsivity and data retention time of our devices were significantly enhanced and prolonged in broadband from 375 to 1310 nm.Further,the devices realize multilevel non-volatile optoelectronic memory through the modulation of several optical and back-gate signals to simulate emotion-controlled learning and memory processes,optical writing-electric erasing,and associative learning.Moreover,we developed a simplified human visual system to simulate color-cognitive perception and memory functions.Our approach offers a route for creating advanced all-in-one neuromorphic sensors and developing neuromorphic computing vision.
