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Large-Area MXene Electrode Array for Flexible Electronics.

Benzheng Lyu, Minje Kim, Hongyue Jing

  • 1Department of Chemical and Biomolecular Engineering , Yonsei University , Seoul 03722 , Republic of Korea.

ACS Nano
|September 26, 2019
PubMed
Summary
This summary is machine-generated.

This study demonstrates high-performance organic field-effect transistors (OFETs) using titanium carbide (Ti3C2) MXene electrodes on flexible substrates. These MXene electrodes, chemically doped for tunable work functions, enable efficient complementary logic circuits.

Keywords:
MXeneelectrodeflexiblelarge areaorganic field-effect transistor

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Electronics

Background:

  • Two-dimensional (2D) MXenes are promising electrode materials for organic field-effect transistors (OFETs) due to their conductivity and tunable work functions.
  • Existing MXene applications face challenges in large-scale fabrication and performance optimization for flexible electronics.

Purpose of the Study:

  • To fabricate large-scale, uniform Ti3C2 MXene electrode arrays on flexible plastic substrates for high-performance OFETs.
  • To investigate the effect of ammonia (NH3) doping on the work function of Ti3C2 MXene electrodes.
  • To demonstrate the integration of these electrodes into functional complementary logic circuits.

Main Methods:

  • Solution processing of Ti3C2 MXene electrode arrays on flexible plastic substrates.
  • Chemical doping of Ti3C2 MXene electrodes using ammonia (NH3).
  • Fabrication and characterization of p-type and n-type OFETs and complementary logic circuits (NOT, NAND, NOR).

Main Results:

  • Achieved high-performance OFETs with Ti3C2 MXene electrodes exhibiting carrier mobility of ~1 cm2·V−1·s−1 and an on-off current ratio of ~10^7.
  • Demonstrated effective work function modulation of Ti3C2 MXene electrodes via NH3 doping.
  • Successfully fabricated functional complementary logic circuits using the developed MXene electrodes.

Conclusions:

  • Ti3C2 MXene electrodes are suitable for fabricating high-performance, low-cost OFETs on flexible substrates.
  • The proposed solution-processed MXene electrode approach is viable for scalable electronic device fabrication.
  • This work expands the potential applications of MXenes in flexible electronics, including displays and electronic skins.