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Updated: Mar 30, 2026

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

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

Published on: February 1, 2022

Large-area functionalized CVD graphene for work function matched transparent electrodes.

Thomas H Bointon¹, Gareth F Jones¹, Adolfo De Sanctis¹

¹Centre for Graphene Science, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, United Kingdom.

Scientific Reports

|November 10, 2015

Summary

We report a novel work function of 5.1 eV for FeCl3 intercalated graphene, crucial for flexible electronics and optoelectronics. This advance enables new possibilities for transparent conductive films in devices like solar cells and LEDs.

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Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

Area of Science:

Materials Science
Condensed Matter Physics
Nanotechnology

Background:

Flexible and transparent conductors are essential for advanced electronic devices.
Indium Tin Oxide (ITO) is a common transparent conductor, but its properties can be limiting.
Achieving work functions similar to ITO is critical for efficient device integration.

Purpose of the Study:

To investigate the work function of large-area FeCl3 intercalated graphene.
To assess the potential of this material for flexible electronics and optoelectronics.
To explore its suitability for infrared plasmonic applications.

Main Methods:

Chemical vapor deposition (CVD) of graphene on Nickel.
Intercalation of graphene with Ferric Chloride (FeCl3).
Work function measurements using techniques suitable for large-area samples.

Main Results:

Demonstrated a work function as high as 5.1 eV for FeCl3 intercalated graphene.
Achieved a high charge density of 5 x 10^13 cm^-2 per graphene layer.
Fabricated a transparent conductive circuit on a polyethylene naphthalate substrate.

Conclusions:

FeCl3 intercalated graphene is a promising material for flexible and transparent conductors.
The tunable work function makes it suitable for various optoelectronic applications.
This material opens avenues for infrared plasmonics and telecommunication technologies.