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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...

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Nitrogen-doped graphene nanoplatelets from simple solution edge-functionalization for n-type field-effect

Dong Wook Chang1, Eun Kwang Lee, Eun Yeob Park

  • 1Department of Chemical Systematic Engineering, Catholic University of Daegu, 100, Hayang, 712-702, South Korea.

Journal of the American Chemical Society
|May 29, 2013
PubMed
Summary

Researchers developed a simple wet-chemical method to create nitrogen-doped graphene nanoplatelets. This process yields high-quality materials for advanced electronic and energy applications.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemistry

Background:

  • Nitrogen-doping of graphitic structures is crucial for applications in energy storage, conversion, and electronics.
  • Developing efficient and versatile doping methods remains a significant challenge.

Purpose of the Study:

  • To report a simple and efficient wet-chemical method for preparing nitrogen-doped graphene nanoplatelets.
  • To functionalize graphene oxide (GO) with nitrogen-containing compounds and subsequently convert them into doped graphene.

Main Methods:

  • Graphene oxide (GO) was reacted with monoamine compounds to form imine functionalized GO (iGO).
  • GO was reacted with ortho-diamine compounds to form pyrazine ring functionalized GO (pGO).
  • Subsequent heat treatments of iGO and pGO yielded nitrogen-doped graphene nanoplatelets (hiGO and hpGO).

Main Results:

  • High-quality nitrogen-doped graphene nanoplatelets (hiGO and hpGO) were successfully synthesized.
  • The hpGO material exhibited n-type field-effect transistor behavior with a Dirac point at -16 V.
  • hpGO demonstrated high hole and electron mobilities of 11.5 and 12.4 cm(2)V(-1)s(-1), respectively.

Conclusions:

  • The developed wet-chemical method provides an efficient route to nitrogen-doped graphene nanoplatelets.
  • The resulting hpGO material shows promise for applications in advanced electronics due to its n-type behavior and high charge carrier mobilities.