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Related Concept Videos

MOSFET01:16

MOSFET

375
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...
375
Characteristics of MOSFET01:17

Characteristics of MOSFET

295
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...
295
MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

242
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...
242
MOSFET: Depletion Mode01:20

MOSFET: Depletion Mode

278
Depletion-mode MOSFETs represent a unique subset of MOSFET technology, functioning fundamentally differently from their enhancement-mode counterparts. Unlike enhancement MOSFETs, which require a positive gate-source voltage (Vgs) to turn on, depletion-mode MOSFETs are inherently conductive and "normally on" devices.
The primary characteristic of depletion-mode MOSFETs is their ability to conduct current between the drain and source terminals without gate bias. This inherent conductivity...
278
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

239
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
239
MOSFET Amplifiers01:17

MOSFET Amplifiers

130
The MOSFET, when operating in its active region, functions as a voltage-controlled current source. In this region, the gate-to-source voltage controls the drain current. This principle underlies the operation of the transconductance MOSFET amplifier. The output current is directed through a load resistor to convert this amplifier into a voltage amplifier. The output voltage is then obtained by subtracting the voltage drop across the load resistance from the supply voltage. This process results...
130

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Updated: May 10, 2025

Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks
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The Planar Core-Shell Junctionless MOSFET.

Cunhua Dou1,2, Weijia Song1, Yu Yan1,2

  • 1Guangdong Greater Bay Area Institute of Integrated Circuit and System, Guangzhou 510300, China.

Micromachines
|April 26, 2025
PubMed
Summary
This summary is machine-generated.

A novel core-shell junctionless field-effect transistor (CS-JL FET) enhances performance by adding an undoped shell layer. This design significantly boosts mobility, transconductance, and drive current for advanced semiconductor applications.

Keywords:
FD-SOIcore–shelljunctionlessminiaturizationmobilityplanar MOSFET

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Area of Science:

  • Semiconductor device physics
  • Advanced MOSFET architectures
  • Silicon-on-insulator (SOI) technology

Background:

  • Conventional junctionless MOSFETs face limitations in performance and scalability.
  • Fully Depleted Silicon-On-Insulator (FD-SOI) technology offers unique processing advantages.
  • Optimizing transistor design is crucial for next-generation integrated circuits.

Purpose of the Study:

  • To introduce and analyze the performance of a novel core-shell junctionless MOSFET (CS-JL FET).
  • To evaluate the impact of the core-shell structure on device characteristics.
  • To demonstrate the compatibility of CS-JL FETs with established semiconductor manufacturing processes.

Main Methods:

  • Fabrication of CS-JL FETs adhering to FD-SOI process requirements.
  • Experimental characterization of drain current, transconductance, and capacitance.
  • Comparative analysis against conventional junctionless MOSFETs.
  • Device parameter engineering for threshold voltage control.

Main Results:

  • CS-JL FETs exhibit a significant performance enhancement over conventional designs.
  • The addition of an undoped shell layer leads to a one-order-of-magnitude increase in peak mobility, transconductance, and drive current.
  • Device parameters (core doping and thickness) can be tuned for normally-off operation.
  • The CS-JL FET architecture is compatible with back-biasing and device downscaling.

Conclusions:

  • The core-shell junctionless MOSFET presents a promising advancement for high-performance semiconductor devices.
  • The proposed structure effectively leverages FD-SOI technology for improved device metrics.
  • CS-JL FETs offer a viable pathway for future integrated circuit scaling and enhanced functionality.