Large-area growth of synaptic heterostructure arrays for integrated neuromorphic visual perception chips  

作　　者：Yao Deng Shenghong Liu Manshi Li Na Zhang Yiming Feng Junbo Han Yury Kapitonov Yuan Li Tianyou Zhai 

机构地区：[1]State Key Laboratory of Materials Processing and Die&Mould Technology,School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China [2]Wuhan National High Magnetic Field Centre,Department of Physics,Huazhong University of Science and Technology,Wuhan 430074,China [3]Department of Radiology,Union Hospital,Tongji Medical College,Huazhong University of Science and Technology,Wuhan 430022,China [4]Department of Photonics,Saint Petersburg State University,Saint Petersburg 199034,Russia [5]Shenzhen Huazhong University of Science and Technology Research Institute,Shenzhen 518057,China

出　　处：《Chip》2024年第2期88-95,共8页芯片（英文）

基　　金：supported by the National Key R&D Program of China(2021YFA1200501);National Natural Science Foundation of China(U22A20137,U21A2069,62202350);Shenzhen Science and Technology Innovation Program(JCYJ20220818102215033,GJHZ20210705142542015,JCYJ20220530160811027).

摘　　要：Two-dimensional metal chalcogenides have garnered significant attention as promising candidates for novel neuromorphic synaptic devices due to their exceptional structural and optoelectronic properties.However,achieving large-scale integration and practical applications of synaptic chips has proven to be challenging due to significant hurdles in materials preparation and the absence of effective nanofabrication techniques.In a recent breakthrough,we introduced a revolutionary allopatric defect-modulated Fe_(7)S_(8)@MoS_(2)synaptic heterostructure,which demonstrated remarkable optoelectronic synaptic response capabilities.Building upon this achievement,our current study takes a step further by presenting a sulfurization-seeding synergetic growth strategy,enabling the large-scale and arrayed preparation of Fe_(7)S_(8)@MoS_(2)heterostructures.Moreover,a three-dimensional vertical integration technique was developed for the fabrication of arrayed optoelectronic synaptic chips.Notably,we have successfully simulated the visual persistence function of the human eye with the adoption of the arrayed chip.Our synaptic devices exhibit a remarkable ability to replicate the preprocessing functions of the human visual system,resulting in significantly improved noise reduction and image recognition efficiency.This study might mark an important milestone in advancing the field of optoelectronic synaptic devices,which significantly prompts the development of mature integrated visual perception chips.

关 键 词：Two-dimensional(2D) Metal chalcogenides HETEROSTRUCTURES Optoelectronic synapse Artificial vision 

分 类 号：TN4[电子电信—微电子学与固体电子学]