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Related Concept Videos

Field Effect Transistor01:29

Field Effect Transistor

Field-effect transistors (FETs) are integral to electronic circuits and distinguished by their three-terminal setup: the gate, drain, and source. These transistors operate as unipolar devices, which utilize either electrons or holes as charge carriers, in contrast to bipolar transistors, which use both types of carriers. The primary function of the FET is to modulate the flow of these carriers from the source to the drain through a channel. The voltage difference between the gate and source...
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...
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...
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

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 semiconductor's...
Types of Semiconductors01:20

Types of Semiconductors

Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...

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Related Experiment Video

Updated: May 12, 2026

In Vitro Multiparametric Cellular Analysis by Micro Organic Charge-modulated Field-effect Transistor Arrays
10:05

In Vitro Multiparametric Cellular Analysis by Micro Organic Charge-modulated Field-effect Transistor Arrays

Published on: September 20, 2021

High mobility field-effect transistors with versatile processing from a small-molecule organic semiconductor.

Yaochuan Mei1, Marsha A Loth, Marcia Payne

  • 1Department of Physics, Wake Forest University, Winston-Salem, NC 27109, USA.

Advanced Materials (Deerfield Beach, Fla.)
|April 5, 2013
PubMed
Summary
This summary is machine-generated.

Trialkylgermyl functionalization enables high-performance organic semiconductors. Spray-deposited transistors achieve record mobility, showing potential for large-area, low-cost electronics.

Keywords:
blend semiconductorshigh mobilityorganic semiconductorsorganic thin-film transistors

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Area of Science:

  • Organic electronics
  • Materials science
  • Semiconductor physics

Background:

  • Trialkylgermyl functionalization is a key strategy for developing high-performance organic semiconductors.
  • Soluble small-molecule organic semiconductors are crucial for advanced electronic applications.

Purpose of the Study:

  • To investigate the performance of trialkylgermyl-functionalized organic semiconductors.
  • To assess the potential of these materials in large-area, low-cost electronic devices.

Main Methods:

  • Synthesis of trialkylgermyl-functionalized small-molecule organic semiconductors.
  • Fabrication of organic thin-film transistors (OTFTs) using spray deposition.
  • Electrical characterization of OTFTs to determine charge carrier mobility.

Main Results:

  • Achieved high mobilities exceeding 5 cm(2) V(-1) s(-1) for soluble small-molecule organic semiconductors.
  • Demonstrated a record mobility of 2.2 cm(2) V(-1) s(-1) in spray-deposited organic thin-film transistors.
  • Confirmed the potential for these materials in scalable electronic applications.

Conclusions:

  • Trialkylgermyl functionalization is a viable route to high-performance organic semiconductors.
  • Spray deposition is a promising technique for fabricating efficient organic electronic devices.
  • These advancements pave the way for cost-effective, large-area organic electronics.