Vertical organic synapse expandable to 3D crossbar arrayopen access
- Authors
- Choi Yongsuk; Oh Seyong; Qian Chuan; Park Jin-Hong; Cho Jeong Ho
- Issue Date
- Sep-2020
- Publisher
- Nature Publishing Group
- Citation
- Nature Communications, v.11, no.1, pp 1 - 19
- Pages
- 19
- Indexed
- SCIE
SCOPUS
- Journal Title
- Nature Communications
- Volume
- 11
- Number
- 1
- Start Page
- 1
- End Page
- 19
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/113743
- DOI
- 10.1038/s41467-020-17850-w
- ISSN
- 2041-1723
2041-1723
- Abstract
- Recently, three-terminal synaptic devices have attracted considerable attention owing to their nondestructive weight-update behavior, which is attributed to the completely separated terminals for reading and writing. However, the structural limitations of these devices, such as a low array density and complex line design, are predicted to result in low processing speeds and high energy consumption of the entire system. Here, we propose a vertical threeterminal synapse featuring a remote weight update via ion gel, which is also extendable to a crossbar array structure. This synaptic device exhibits excellent synaptic characteristics, which are achieved via precise control of ion penetration onto the vertical channel through the weight-control terminal. Especially, the applicability of the developed vertical organic synapse array to neuromorphic computing is demonstrated using a simple crossbar synapse array. The proposed synaptic device technology is expected to be an important steppingstone to the development of high-performance and high-density neural networks.
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