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A unipolar-driven synaptic transistor for environment-adaptable vision system

Author

Listed:
  • Sukwon Jang

    (Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST))

  • Keunho Soh

    (Jangan-gu)

  • Chungryeol Lee

    (Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST))

  • Taehyun Nam

    (Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST))

  • Minjae Jang

    (Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST))

  • Jeong-ik Park

    (Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST))

  • Changhyeon Lee

    (Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST))

  • Junhwan Choi

    (Suji-gu)

  • Jung Ho Yoon

    (Jangan-gu)

  • Sung Gap Im

    (Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST)
    KAIST)

Abstract

Unlike conventional synapses in neural networks relying on bipolar spike-driven modulation, biological synapses in the peripheral nervous system handle unipolar input based on stimulus intensity, generating excitatory or inhibitory signals. Here, we demonstrate a unipolar-driven synaptic transistor (UDST) that exhibits both responses under a single-polarity voltage. The unipolar property is achieved within a single device through a bilayer gate dielectric, comprising a high-k charge trapping layer (k > 6) and an ultrathin charge tunneling layer (

Suggested Citation

  • Sukwon Jang & Keunho Soh & Chungryeol Lee & Taehyun Nam & Minjae Jang & Jeong-ik Park & Changhyeon Lee & Junhwan Choi & Jung Ho Yoon & Sung Gap Im, 2025. "A unipolar-driven synaptic transistor for environment-adaptable vision system," Nature Communications, Nature, vol. 16(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-63073-2
    DOI: 10.1038/s41467-025-63073-2
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