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Sodium-based nano-ionic synaptic transistor with improved retention characteristics

Title
Sodium-based nano-ionic synaptic transistor with improved retention characteristics
Authors
LEE, KYUMINLEE, LEEJONGWONNIKAM REVANNATH허성재Hwang, Hyunsang
Date Issued
2020-11
Publisher
IOP PUBLISHING LTD
Abstract
We propose an all-solid-state Na ion-based synaptic transistor (NST) to overcome the low retention problem of the Li ion-based synaptic transistor (LST). Through our analysis, it was found that the retention instability in an ionic synaptic transistor originated from its high ionic diffusivity. As confirmed by cyclic voltammetry analysis, Na ions have a lower ionic diffusivity than Li ions in the WO(x)layer. The state retention of NST was found to be improved to 20 times that of LST. Furthermore, near-ideal synaptic behaviors, such as linear weight update and linearI-Vcharacteristics, were also obtained by material engineering.
URI
https://oasis.postech.ac.kr/handle/2014.oak/105532
ISSN
0957-4484
Article Type
Article
Citation
NANOTECHNOLOGY, vol. 31, no. 45, 2020-11
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황현상HWANG, HYUNSANG
Dept of Materials Science & Enginrg
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