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Related Experiment Video

Updated: Jun 17, 2026

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
07:51

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Published on: February 1, 2022

High mobility, printable, and solution-processed graphene electronics.

Shuai Wang1, Priscilla Kailian Ang, Ziqian Wang

  • 1Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore. chmlohkp@nus.edu.sg

Nano Letters
|December 23, 2009
PubMed
Summary
This summary is machine-generated.

High-quality graphene films for electronics can now be solution-processed. Optimized fabrication yields high carrier mobilities, enabling advanced all-carbon post-Complementary Metal-Oxide-Semiconductor (CMOS) electronics.

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Scalable Solution-processed Fabrication Strategy for High-performance, Flexible, Transparent Electrodes with Embedded Metal Mesh

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Electronics Engineering

Background:

  • Solution-processable graphene sheets offer potential for large-scale, flexible electronics.
  • Current methods yield graphene with poor electrical conductivity and carrier mobility due to defects.
  • This limits the application of solution-processed graphene in advanced electronic devices.

Purpose of the Study:

  • To develop high-mobility graphene films from solution-processable graphene oxide sheets.
  • To enable the fabrication of all-carbon post-Complementary Metal-Oxide-Semiconductor (CMOS) electronics.
  • To improve the transport characteristics of graphene-based electronic components.

Main Methods:

  • Optimizing key processing factors for fabricating graphene films from large-sized graphene oxide sheets.
  • Fabricating all-carbon source-drain channel electronics using the developed graphene films.
  • Measuring carrier mobilities in air at room temperature and under ionic screening conditions.

Main Results:

  • Achieved carrier mobilities of 365 cm²/Vs (hole) and 281 cm²/Vs (electron) in air at room temperature.
  • Demonstrated significantly improved transport characteristics in all-carbon electronics.
  • Obtained intrinsic mobility as high as 5000 cm²/Vs by applying ionic screening to mitigate Coulombic scattering.

Conclusions:

  • Optimized processing of graphene oxide sheets enables high-mobility graphene films suitable for electronics.
  • This advancement paves the way for the development of all-carbon post-CMOS electronics.
  • Solution-processed graphene films show promise for next-generation flexible and transparent electronic applications.