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説明:

Neuromorphic computing, a nonvon Neumann architecture, holds promise for low-power, high-efficiency data processing. Herein, we demonstrated reconfigurable artificial synapses using a floating-gate-type organic antiambipolar transistor (FG-OAAT) to mimic biological synapses. The FG-OAAT exhibited a Λ-shaped transfer curve with negative differential transconductance. A two-dimensional continuous Au film was used as the floating gate to induce a large peak voltage shift in the Λ-shaped transfer curve by controlling hole- and electron-trapping processes in the floating gate. This feature enabled reconfigurable synaptic operations. Long-term potentiation/depression, excitatory/inhibitory, and paired-pulse facilitation/depression functions were electrically reconfigured by tuning the charge conditions in the floating gate. These versatile synaptic operations were induced by a consistent presynaptic signal, with fixed polarity, applied voltage, and pulse width. These behaviors closely resembled those of biological synapses, highlighting the potential for a brain-like computing architecture that surpasses current von Neumann systems.

権利情報:

• cc-by-nc-3.0
  

キーワード: Reconfigurable artificial synapses, Organic antiambipolar transistor, Floating gate, Negative differential transconductance

刊行年月日: 2025-06-11

出版者: Royal Society of Chemistry (RSC)

掲載誌:

• Journal of Materials Chemistry C (ISSN: 20507526) vol. 13 issue. 28 p. 14234-14241

研究助成金:

• National Institute for Materials Science
• Ministry of Education, Culture, Sports, Science and Technology JPMXP1223NM5170
• Ministry of Education, Culture, Sports, Science and Technology JPMXP1224NM5158
• Japan Society for the Promotion of Science 19H00866
• Japan Society for the Promotion of Science 23H00269
• Japan Society for the Promotion of Science 24K01564
• Japan Society for the Promotion of Science 22K18268

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1039/d5tc01712b

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更新時刻: 2025-10-21 15:50:09 +0900

MDRでの公開時刻: 2025-10-21 15:43:49 +0900