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Related Experiment Video

Updated: Jan 30, 2026

Preparation of Silicon Nanowire Field-effect Transistor for Chemical and Biosensing Applications
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High Performance Drain Engineered InGaN Heterostructure Tunnel Field Effect Transistor.

Xiaoling Duan1, Jincheng Zhang2, Jiabo Chen3

  • 1Wide Bandgap Semiconductor Technology Disciplines State Key Laboratory, School of Microelectronics, Xidian University, Xi'an 710071, China. duanxiaoling@xidian.edu.cn.

Micromachines
|January 24, 2019
PubMed
Summary
This summary is machine-generated.

Engineered indium gallium nitride (InGaN) heterostructure tunnel field-effect transistors (TFETs) reduce ambipolar current by over 1000x. Polar InGaN TFETs show improved performance, with a 53.3% reduction in subthreshold swing and doubled ON-current.

Keywords:
ON-stateambipolardrain engineeredpolarizationsubthresholdtunnel field effect transistor (TFET)

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Area of Science:

  • Semiconductor Physics
  • Materials Science
  • Device Engineering

Background:

  • Tunnel field-effect transistors (TFETs) offer potential for low-power electronics due to their steep switching characteristics.
  • Indium gallium nitride (InGaN) heterostructures are promising for high-performance electronic devices.
  • Ambipolar behavior and subthreshold swing are critical parameters for TFET performance.

Purpose of the Study:

  • To propose and investigate a novel drain-engineered InGaN heterostructure TFET (DE-HTFET).
  • To analyze the impact of drain engineering and polarization effects on TFET performance.
  • To reduce ambipolar current and improve switching characteristics.

Main Methods:

  • Device simulation using Silvaco Atlas.
  • Design of a drain-engineered InGaN heterostructure TFET.
  • Analysis of energy band modulation and carrier tunneling.
  • Comparison of polar and nonpolar InGaN DE-HTFETs.

Main Results:

  • Ambipolar current reduced from 1.93 × 10-8 to 1.46 × 10-11 A/μm with drain engineering.
  • Polar InGaN DE-HTFET exhibits a 53.3% reduction in average subthreshold swing compared to nonpolar.
  • ON-current (ION) doubled from 137 mA/mm (nonpolar) to 274 mA/mm (polar).

Conclusions:

  • Drain engineering effectively suppresses ambipolar current in InGaN TFETs.
  • Polarization effects in InGaN heterostructures significantly enhance TFET performance.
  • The proposed DE-HTFET demonstrates potential for high-performance, low-power applications.