神经形态工程学
材料科学
晶体管
计算机科学
异质结
突触
光电子学
紫外线
突触重量
神经科学
纳米技术
人工智能
电气工程
人工神经网络
电压
工程类
生物
作者
Xiao Liu,Wen Huang,Cuihong Kai,Lei Yin,Yue Wang,Xiaoping Li,Xiaodong Pi,Deren Yang
出处
期刊:ACS applied electronic materials
[American Chemical Society]
日期:2023-01-10
卷期号:5 (1): 367-374
被引量:4
标识
DOI:10.1021/acsaelm.2c01390
摘要
Neuromorphic vision that integrates the functionalities of sensing, memory, and processing may provide an important approach to overcome the drawbacks of a conventional artificial visual system such as data redundancy and high-power consumption. It has exhibited considerable potential to mimic the functionalities of human vision even beyond the visible-light range. In this work, we show an ultraviolet (UV)-responsive synaptic transistor based on the heterostructure of 4H-SiC and organic semiconductors. Benefiting from the heterostructure design and photogating effect, the non-volatility of the synaptic transistor is achieved. Various biological synaptic functionalities are successfully mimicked by the synaptic transistor. The electrical energy consumption of the device per synaptic event is only 0.55 fJ, which is comparable to the energy consumption of a biological synapse. Furthermore, the dynamic learning and forgetting process of the image of a letter is simulated by using an array of the devices, demonstrating the potential of the UV-responsive synaptic devices for neuromorphic UV vision with the capability of the image recognition and memory.
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