TY - JOUR
T1 - An air-stable artificial synapse based on a lead-free double perovskite Cs2AgBiBr6film for neuromorphic computing
AU - Lao, Jie
AU - Xu, Wen
AU - Jiang, Chunli
AU - Zhong, Ni
AU - Tian, Bobo
AU - Lin, Hechun
AU - Luo, Chunhua
AU - Travas-Sejdic, Jadranka
AU - Peng, Hui
AU - Duan, Chun Gang
N1 - Publisher Copyright:
© The Royal Society of Chemistry.
PY - 2021/5/7
Y1 - 2021/5/7
N2 - Halide perovskites (HPs) are promising materials for preparing nonvolatile memory and artificial synapse devices. However, the instability and toxicity of lead HPs seriously restrict their further application. Herein, a lead-free and air-stable Ag/polymethylmethacrylate (PMMA)/Cs2AgBiBr6/ITO device is fabricated, which exhibits typical resistive switching (RS) characteristics and synaptic behaviors, including long-term potentiation (LTP), long-term depression (LTD), paired-pulse facilitation (PPF) and spike-dependent plasticity. The ion migration of Br- and Ag+ in Cs2AgBiBr6 led to the formation and fracture of a conductive filament. Notably, no obvious decay in the device performance was observed after being directly exposed to the ambient environment for 20 days, indicating that the device exhibits good environmental stability. Furthermore, the recognition rate reaches 91.3% by using the MNIST handwritten data set. This air-stable and lead-free device provides a new candidate for the next generation of neuromorphic computation based on halide perovskites.
AB - Halide perovskites (HPs) are promising materials for preparing nonvolatile memory and artificial synapse devices. However, the instability and toxicity of lead HPs seriously restrict their further application. Herein, a lead-free and air-stable Ag/polymethylmethacrylate (PMMA)/Cs2AgBiBr6/ITO device is fabricated, which exhibits typical resistive switching (RS) characteristics and synaptic behaviors, including long-term potentiation (LTP), long-term depression (LTD), paired-pulse facilitation (PPF) and spike-dependent plasticity. The ion migration of Br- and Ag+ in Cs2AgBiBr6 led to the formation and fracture of a conductive filament. Notably, no obvious decay in the device performance was observed after being directly exposed to the ambient environment for 20 days, indicating that the device exhibits good environmental stability. Furthermore, the recognition rate reaches 91.3% by using the MNIST handwritten data set. This air-stable and lead-free device provides a new candidate for the next generation of neuromorphic computation based on halide perovskites.
UR - https://www.scopus.com/pages/publications/85105579260
U2 - 10.1039/d1tc00655j
DO - 10.1039/d1tc00655j
M3 - 文章
AN - SCOPUS:85105579260
SN - 2050-7526
VL - 9
SP - 5706
EP - 5712
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
IS - 17
ER -