Thermally and Mechanically Stable Perovskite Artificial Synapse as Tuned by Phase Engineering for Efferent Neuromuscular Control

Thermally and Mechanically Stable Perovskite Artificial Synapse as Tuned by Phase Engineering for Efferent Neuromuscular Control

The doping of perovskites with mixed cations and mixed halides is an effective strategy to optimize phase stability. In this study, we introduce a cubic black phase perovskite Cs y FA(1–y)Pb­(Br x I(1–x))3 artificial synapse, using phase engineering by adjusting the cesium-bromide content. Low-bromi...

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Veröffentlicht in:Nano letters 2024-07, Vol.24 (30), p.9311-9321
Hauptverfasser: Wei, Huanhuan, Gong, Jiangdong, Liu, Jiaqi, He, Gang, Ni, Yao, Fu, Can, Yang, Lu, Guo, Jiahao, Xu, Zhipeng, Xu, Wentao
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container_end_page 9321
container_issue 30
container_start_page 9311
container_title Nano letters
container_volume 24
creator Wei, Huanhuan
Gong, Jiangdong
Liu, Jiaqi
He, Gang
Ni, Yao
Fu, Can
Yang, Lu
Guo, Jiahao
Xu, Zhipeng
Xu, Wentao
description The doping of perovskites with mixed cations and mixed halides is an effective strategy to optimize phase stability. In this study, we introduce a cubic black phase perovskite Cs y FA(1–y)Pb­(Br x I(1–x))3 artificial synapse, using phase engineering by adjusting the cesium-bromide content. Low-bromine mixed perovskites are suitable to improve the electric pulse excitation sensitivity and stability of the device. Specifically, the low-bromine and low-cesium mixed perovskite (x = 0.15, y = 0.22) annealed at 373 K allows the device to maintain logic response even after 1000 mechanical flex/flat cycles. The device also shows good thermal stability up to temperatures of 333 K. We have demonstrated reflex-arc behavior with MCMHP synaptic units, capable of making sensory warnings at high frequency. This compositionally engineered, dual-mixed perovskite synaptic device provides significant potential for perceptual soft neurorobotic systems and prostheses.
doi_str_mv 10.1021/acs.nanolett.4c02240
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title Thermally and Mechanically Stable Perovskite Artificial Synapse as Tuned by Phase Engineering for Efferent Neuromuscular Control
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