神经形态工程学
材料科学
光电子学
加密
纳米技术
人工神经网络
计算机科学
人工智能
操作系统
作者
Jiaxin Chen,Xinya Liu,Qingshan Zhu,Xiaosheng Fang,Wentao Xu
标识
DOI:10.1002/adfm.202402684
摘要
Abstract Neuromorphic device that percepts ultraviolet (UV) radiations is essential for supplementing human visual perception. However, UV‐responsive synapses with high sensitivity and wavelength selectivity have not yet been developed so far. Herein, 2D optoelectronic synapses that are able to distinguish between UV‐A, UV‐,B and UV‐C radiations using a single material are demonstrated. The synapses use Ca 2 Nb 3 O 10 nanosheets with wide bandgap and persistent photoconductivity effect (PPC) as UV‐responsive layer. The devices can detect UV‐C rays at ultralow intensity of 70 nW cm −2 , which is the lowest record among 2D UV synaptic devices. Moreover, such a device demonstrates UV image vision, recognition, and memorization functions based on its diverse synaptic behaviors. The atomically thin UV synapses provide implications for enhancing human visual perception capabilities with spectral selectivity, ultrahigh sensitivity, and low‐energy consumption.
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