A bioinspired flexible neuromuscular system based thermal-annealing-free perovskite with passivation

Jiaqi Liu, Jiangdong Gong, Huanhuan Wei, Yameng Li, Haixia Wu, Chengpeng Jiang, Yuelong Li () and Wentao Xu ()
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Jiaqi Liu: Institute of Photoelectronic Thin Film Devices and Technology of Nankai University; Solar Energy Research Center of Nankai University; Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin; Engineering Research Center of Thin Film Photoelectronic Technology, Ministry of Education, #38 Tongyan Road, Jinnan District
Jiangdong Gong: Institute of Photoelectronic Thin Film Devices and Technology of Nankai University; Solar Energy Research Center of Nankai University; Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin; Engineering Research Center of Thin Film Photoelectronic Technology, Ministry of Education, #38 Tongyan Road, Jinnan District
Huanhuan Wei: Institute of Photoelectronic Thin Film Devices and Technology of Nankai University; Solar Energy Research Center of Nankai University; Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin; Engineering Research Center of Thin Film Photoelectronic Technology, Ministry of Education, #38 Tongyan Road, Jinnan District
Yameng Li: Institute of Photoelectronic Thin Film Devices and Technology of Nankai University; Solar Energy Research Center of Nankai University; Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin; Engineering Research Center of Thin Film Photoelectronic Technology, Ministry of Education, #38 Tongyan Road, Jinnan District
Haixia Wu: Hebei University of Science and Technology
Chengpeng Jiang: Institute of Photoelectronic Thin Film Devices and Technology of Nankai University; Solar Energy Research Center of Nankai University; Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin; Engineering Research Center of Thin Film Photoelectronic Technology, Ministry of Education, #38 Tongyan Road, Jinnan District
Yuelong Li: Institute of Photoelectronic Thin Film Devices and Technology of Nankai University; Solar Energy Research Center of Nankai University; Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin; Engineering Research Center of Thin Film Photoelectronic Technology, Ministry of Education, #38 Tongyan Road, Jinnan District
Wentao Xu: Institute of Photoelectronic Thin Film Devices and Technology of Nankai University; Solar Energy Research Center of Nankai University; Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin; Engineering Research Center of Thin Film Photoelectronic Technology, Ministry of Education, #38 Tongyan Road, Jinnan District

Nature Communications, 2022, vol. 13, issue 1, 1-11

Abstract: Abstract Brain-inspired electronics require artificial synapses that have ultra-low energy consumption, high operating speed, and stable flexibility. Here, we demonstrate a flexible artificial synapse that uses a rapidly crystallized perovskite layer at room temperature. The device achieves a series of synaptic functions, including logical operations, temporal and spatial rules, and associative learning. Passivation using phenethyl-ammonium iodide eliminated defects and charge traps to reduce the energy consumption to 13.5 aJ per synaptic event, which is the world record for two-terminal artificial synapses. At this ultralow energy consumption, the device achieves ultrafast response frequency of up to 4.17 MHz; which is orders of magnitude magnitudes higher than previous perovskite artificial synapses. A multi-stimulus accumulative artificial neuromuscular system was then fabricated using the perovskite synapse as a key processing unit to control electrochemical artificial muscles, and realized muscular-fatigue warning. This artificial synapse will have applications in future bio-inspired electronics and neurorobots.

Date: 2022
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DOI: 10.1038/s41467-022-35092-w

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