Download file (7.42MB)
Download as zip (6.99MB)

コレクション

引用

説明:

This study introduces a memristor device, made up of a well-known MIEC cuprous iodide (CuI), for artificial synaptic applications. A cross-point structured Cu/CuI/Pt device initially shows digital bipolar RS under bias voltage sweeping, which is characterized by well-separated SET and RESET voltages with a high ON/OFF resistance ratio of ~105. After 100 bias sweeping cycles, the device completely changes, showing analog RS behavior without any well-defined SET and RESET voltage, and exhibits a continuous current trajectory under bias sweeps. In comparison to the digital RS mode, the analog RS mode exhibits minimal cycle-to-cycle variability with a reduced ON/OFF ratio of ~10. The current conduction mechanism underlying digital switching behavior is ascribed to the formation and dissolution of a Cu filament. The analog RS behavior arises from charge trapping/detrapping at defect sites created during digital RS cycles. The device showing analog RS exhibits long-term and short-term plasticity, similar to biological synapses under voltage pulse applications. Utilizing the long-term plasticity data, artificial neural network simulations demonstrate an image recognition accuracy of ~93% for handwritten digits. Furthermore, the device successfully replicates paired-pulse facilitation/depression and spike timing-dependent plasticity.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: analog memristor, mixed ionic-electronic conductor, cuprous iodide, artificial synapse, artificial neural network

刊行年月日: 2025-05-27

出版者: American Chemical Society (ACS)

掲載誌:

• ACS Applied Electronic Materials (ISSN: 26376113) vol. 7 issue. 10 p. 4616-4627

研究助成金:

• Ministry of Education, Culture, Sports, Science and Technology JPMXP1224NM5068
• Department of Science and Technology, Ministry of Science and Technology, India SR/FST/PSI-212/2016(C)
• Japan Society for the Promotion of Science 24K02917

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1021/acsaelm.5c00529

関連資料:

その他の識別子:

連絡先:

更新時刻: 2025-05-31 08:30:25 +0900

MDRでの公開時刻: 2025-05-31 08:22:50 +0900