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Related Concept Videos

Biasing of FET01:22

Biasing of FET

Biasing a Junction Field Effect Transistor (JFET) is crucial for setting operational parameters and ensuring efficient functioning in electronic circuits. JFETs are characterized by using a single carrier type in N-channel or P-channel configurations, where the channel is surrounded by PN junctions. These junctions are central to the device's ability to control current flow.
In an N-channel JFET, the structure consists of N-type material forming the channel on a P-type substrate, with the gate...
Characteristics of JFET01:21

Characteristics of JFET

Junction Field Effect Transistors (JFETs) exhibit specific operational characteristics based on the relationship between the drain current (id) and the drain-source voltage (Vds), along with varying gate-source voltages (Vgs).
The core of a JFET's operation is controlling drain current by modulating the gate-source voltage. When the drain and gate voltage are set to zero, the JFET exhibits no net current flow, representing a state of equilibrium. The drain current increases linearly as the...
MOSFET01:16

MOSFET

The Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) plays a pivotal role in modern electronics thanks to its versatility and efficiency in controlling electrical currents. This device, also known as IGFET, MISFET, and MOSFET, has three main terminals: the Source, Drain, and Gate. MOSFETs are classified into n-channel or p-channel types based on the doping characteristics of their substrate and the source or drain regions.
In an n-MOSFET, the structure includes n-type source and drain...
MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no current...
Biasing of Metal-Semiconductor Junctions01:27

Biasing of Metal-Semiconductor Junctions

Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
Characteristics of MOSFET01:17

Characteristics of MOSFET

Metal-oxide-semiconductor field-effect Transistors, or MOSFETs, play a critical role in electronic circuits. They are primarily utilized for amplifying and switching signals.
Various vital parameters influence their functionality, which is crucial for theory and electronics applications. First, channel dimensions, precisely length, and width, are pivotal. The size of these channels affects the transistor's ability to carry current and switching speeds; shorter channels typically enable quicker...

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Related Experiment Video

Updated: Jun 27, 2026

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
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Published on: April 12, 2018

A Backside-Electrode-Free Lateral 4H-SiC JFET with Three-Terminal Dual-Gate Design for Stable DC Operation at 500 °C.

Yuting Tang1, Qian Luo2, Jiang Zhu1

  • 1School of Integrated Circuits, Dalian University of Technology, Dalian 116024, China.

Micromachines
|June 26, 2026
PubMed
Summary

This study introduces a novel 4H-SiC JFET for high-temperature electronics. The planar design ensures stable operation up to 500°C, enhancing performance for demanding applications.

Keywords:
4H-SiCJFETTCADhigh-temperature

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Last Updated: Jun 27, 2026

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
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Published on: April 12, 2018

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Area of Science:

  • Materials Science
  • Semiconductor Physics
  • Electrical Engineering

Background:

  • Electronics require high-temperature operation for aerospace, automotive, and energy sectors.
  • Existing devices face limitations in extreme thermal environments.

Purpose of the Study:

  • To develop a novel 4H-SiC n-channel depletion-mode junction field effect transistor (JFET) for high-temperature applications.
  • To eliminate the back-gate effect and improve integration compatibility through a planar electrode layout.

Main Methods:

  • Fabrication of a three-terminal, dual-gate, lateral 4H-SiC n-channel depletion-mode JFET.
  • Experimental characterization of device performance up to 500 °C.
  • Comparison with Technology Computer-Aided Design (TCAD) simulations.

Main Results:

  • Stable DC operation demonstrated up to 500 °C.
  • Intrinsic gain measured at 9.79 at room temperature and 6.01 at 500 °C.
  • Excellent agreement between experimental data and TCAD simulations for key physical trends, with discrepancies attributed to parasitic effects.

Conclusions:

  • The novel planar JFET structure suppresses channel-length modulation and enhances output resistance and gate control.
  • This device platform is suitable for high-temperature 4H-SiC analog integrated circuits (ICs).
  • The findings provide guidance for process-oriented device optimization in extreme environments.