A Quantum-Well Charge-Trap Synaptic Transistor with Highly Linear Weight Tunability

Eunseon Yu, Seongjae Cho, Kaushik Roy, Byung Gook Park

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


In this work, a novel synaptic transistor has been proposed and analyzed through technology computer-aided design (TCAD) simulation. The proposed device has merits of full-Si processing compatibility, short- and long-term plasticity, high energy efficiency, and linear and symmetric conductance adjustability. The proposed device consists of a quantum-well structure and a charge-trap unit for realizing both short- and long-term memories, respectively. The quantum-well charge-trap synaptic transistor (QW CTS) employs two independent gates to separate inference and weight adjustment operation. An optimally designed and validated QW CTS has demonstrated a highly linear and symmetric weight tunability, with an ultra-low energy consumption of 1.5 fJ per synaptic event. The QW CTS can be a core element in the hardware-driven Si neuromorphic system.

Original languageEnglish
Article number9146508
Pages (from-to)834-840
Number of pages7
JournalIEEE Journal of the Electron Devices Society
StatePublished - 2020

Bibliographical note

Publisher Copyright:
© 2013 IEEE.


  • energy efficiency
  • hardware-driven neuromorphic system
  • linear weight tunability
  • long-term plasticity (LTP)
  • quantum-well charge-trap synaptic transistor
  • short-term plasticity (STP)
  • Si-processing compatibility


Dive into the research topics of 'A Quantum-Well Charge-Trap Synaptic Transistor with Highly Linear Weight Tunability'. Together they form a unique fingerprint.

Cite this