Co-assembled perylene/graphene oxide photosensitive heterobilayer for efficient neuromorphics

He-Shan Zhang, Xue-Mei Dong, Zi-Cheng Zhang, Ze-Pu Zhang, Chao-Yi Ban, Zhe Zhou, Cheng Song, Shi-Qi Yan, Qian Xin, Ju-Qing Liu (), Yin-Xiang Li () and Wei Huang ()
Additional contact information
He-Shan Zhang: Nanjing Tech University (NanjingTech)
Xue-Mei Dong: Nanjing Tech University (NanjingTech)
Zi-Cheng Zhang: Nanjing Tech University (NanjingTech)
Ze-Pu Zhang: Nanjing Tech University (NanjingTech)
Chao-Yi Ban: Nanjing Tech University (NanjingTech)
Zhe Zhou: Nanjing Tech University (NanjingTech)
Cheng Song: Nanjing Tech University (NanjingTech)
Shi-Qi Yan: Shandong University
Qian Xin: Shandong University
Ju-Qing Liu: Nanjing Tech University (NanjingTech)
Yin-Xiang Li: Nanjing Tech University (NanjingTech)
Wei Huang: Nanjing Tech University (NanjingTech)

Nature Communications, 2022, vol. 13, issue 1, 1-9

Abstract: Abstract Neuromorphic electronics, which use artificial photosensitive synapses, can emulate biological nervous systems with in-memory sensing and computing abilities. Benefiting from multiple intra/interactions and strong light-matter coupling, two-dimensional heterostructures are promising synaptic materials for photonic synapses. Two primary strategies, including chemical vapor deposition and physical stacking, have been developed for layered heterostructures, but large-scale growth control over wet-chemical synthesis with comprehensive efficiency remains elusive. Here we demonstrate an interfacial coassembly heterobilayer films from perylene and graphene oxide (GO) precursors, which are spontaneously formed at the interface, with uniform bilayer structure of single-crystal perylene and well-stacked GO over centimeters in size. The planar heterostructure device exhibits an ultrahigh specific detectivity of 3.1 × 1013 Jones and ultralow energy consumption of 10−9 W as well as broadband photoperception from 365 to 1550 nm. Moreover, the device shows outstanding photonic synaptic behaviors with a paired-pulse facilitation (PPF) index of 214% in neuroplasticity, the heterosynapse array has the capability of information reinforcement learning and recognition.

Date: 2022
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DOI: 10.1038/s41467-022-32725-y

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