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Related Concept Videos

Field Effect Transistor01:29

Field Effect Transistor

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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...
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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.
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MOSFET: Enhancement Mode01:22

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Related Experiment Video

Updated: Mar 11, 2026

Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors
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Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors

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Organic field-effect transistors using single crystals.

Tatsuo Hasegawa1, Jun Takeya2

  • 1Photonics Research Institute (PRI), National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba 305-8562, Japan.

Science and Technology of Advanced Materials
|November 24, 2016
PubMed
Summary

Single-crystal organic field-effect transistors (SC-OFETs) reveal intrinsic charge dynamics in molecular semiconductors. Interface charge transport is explained by band transport and charge traps, crucial for plastic electronics.

Keywords:
Hall effectband transportcharge-transfer compoundelectron-spin resonanceorganic transistorpentacenerubrenesingle crystaltetracyanoquinodimethanetetrathiafulvalene

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Area of Science:

  • Materials Science
  • Condensed Matter Physics

Background:

  • Organic thin-film transistors (OFETs) are key to plastic electronics.
  • Understanding charge dynamics in molecular semiconductors is essential for device optimization.

Approach:

  • Review of materials and fabrication methods for single-crystal organic field-effect transistors (SC-OFETs).
  • Investigation of intrinsic charge dynamics at semiconductor surfaces and interfaces.
  • Utilizing Hall effect and electron spin resonance (ESR) measurements.

Key Points:

  • Rubrene single crystals achieved benchmark carrier mobility (20-40 cm² Vs⁻¹).
  • SC-OFETs elucidate fundamental physics of charge transport in organic semiconductors.
  • Microscopic charge transport at contacts and interfaces was analyzed.

Conclusions:

  • Interface charge transport in molecular semiconductors follows band transport and charge trap models.
  • SC-OFETs provide critical insights into material limitations for organic electronic devices.
  • This research clarifies the fundamental charge carrier behavior in organic semiconductors.