Tunnel Thin-Film Transistor Featuring Ferroelectric Gate Stack for Synaptic Applications

William Cheng Yu Ma*, Chun Jung Su, Kuo Hsing Kao, Ta Chun Cho, Jing Qiang Guo, Cheng Jun Wu, Po Ying Wu, Jia Yuan Hung

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The tunnel thin-film transistor (tunnel-TFT) with polycrystalline-silicon (poly-Si) channel and ferroelectric gate dielectric HfZrOx is fabricated to demonstrate the synaptic characteristics of potentiation and depression in conductance (Gd). Compared to conventional ferroelectric TFT (Fe-TFT), the ferroelectric tunnel-TFT exhibits much lower conduction current and Gd due to its unique carrier transport mechanism: interband tunneling. The low conduction current and Gd of ferroelectric tunnel-TFT can effectively reduce the power dissipation of neuromorphic computing circuits. Consequently, the ferroelectric tunnel-TFT is demonstrated to exhibit a 5-bit function, low asymmetry, and high Gd ratio to meet the requirement of a high recognition rate of neuromorphic computing.

Original languageEnglish
Title of host publication30th International Workshop on Active-Matrix Flatpanel Displays and Devices
Subtitle of host publicationTFT Technologies and FPD Materials, AM-FPD 2023 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages154-156
Number of pages3
ISBN (Electronic)9784991216947
StatePublished - 2023
Event30th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2023 - Hybrid, Kyoto, Japan
Duration: 4 Jul 20237 Jul 2023

Publication series

Name30th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2023 - Proceedings

Conference

Conference30th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2023
Country/TerritoryJapan
CityHybrid, Kyoto
Period4/07/237/07/23

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