College of Materials Science and Opto-Electronic Technology, Center of Materials Science and Optoelectronics Engineering, CAS Center for Excellence in Topological Quantum Computation, and CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, 100049, P.R. China.
National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center for Advanced Microstructures, Nanjing University, Nanjing, 210093, P.R. China.
Angew Chem Int Ed Engl. 2023 Feb 1;62(6):e202213733. doi: 10.1002/anie.202213733. Epub 2022 Dec 13.
Photonic synapses with the dual function of optical signal detection and information processing can simulate human visual system. However, photonic synapses with selective detection of short-wavelength infrared (SWIR) light have never been reported, which can not only broaden the human vision region but also integrate neuromorphic computation and infrared optical communication. Here, organic photonic synapses based on a new donor-acceptor copolymer P1 are fabricated, which exhibit excellent synaptic characteristics with selective detection for SWIR and extremely low energy consumption (2.85 fJ). The working mechanism is rooted in energy level barriers and unbalanced charge transportation. Moreover, these photonic synapses demonstrate excellent performance in multi-signal logic editing, letter imaging and memory with noise reduction function. This contribution provides ideas of constructing selective-response synapses for artificial visual system and neuromorphic computing.
具有光信号检测和信息处理双重功能的光子突触可以模拟人类视觉系统。然而，具有选择性短波长红外 (SWIR) 光检测功能的光子突触从未被报道过，它不仅可以拓宽人类的视觉区域，还可以集成神经形态计算和红外光通信。在这里，基于新型给体-受体共聚物 P1 制备了有机光子突触，其具有优异的突触特性，可对 SWIR 光进行选择性检测，并且能量消耗极低（2.85 fJ）。工作机制源于能级势垒和不平衡的电荷输运。此外，这些光子突触在具有降噪功能的多信号逻辑编辑、字母成像和存储方面表现出优异的性能。这项工作为人工视觉系统和神经形态计算中构建选择性响应突触提供了思路。
