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2D MXene electrochemical transistors
Jyoti Shakya1, Min-A Kang1,2, Jian Li1
1Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56, 10044 Stockholm, Sweden. mahiar@kth.se.
Nanoscale
|January 23, 2024
Summary
MXenes, a new class of 2D materials, have been used to create electrochemical transistors (ECTs). These MXene ECTs show promise for advanced transistor applications, drawing inspiration from organic ECTs.
Area of Science:
- Materials Science
- Nanotechnology
- Electronics
Background:
- Field-effect transistors (FETs) and organic electrochemical transistors (ECTs) are key transistor technologies.
- Organic ECTs utilize bulk electrochemical doping for high conductance modulation, unlike FETs' surface doping.
- MXenes, a novel class of 2D materials, offer unique properties beyond graphene.
Purpose of the Study:
- To demonstrate the feasibility of using MXenes for electrochemical transistors (ECTs).
- To adapt existing organic ECT theories and formulas for MXene-based devices.
- To explore the correlation between conductance changes and redox states in MXene films.
Main Methods:
- Fabrication of MXene-based electrochemical transistors (ECTs).
- Application of organic ECT formulas to extract device parameters like mobility.
- Conductance switching measurements combined with in situ-ex situ electrochemical analysis.
Main Results:
- Successful realization of MXene-based 2D electrochemical transistors (ECTs).
- MXene ECTs exhibit high transconductance but low on-off ratios.
- Established a correlation between conductance and redox state changes in MXene films.
Conclusions:
- MXene ECTs represent a new frontier in transistor technology, inspired by organic ECTs.
- These devices offer potential advantages over conducting polymer ECTs, including heat resistance and solvent tolerance.
- MXene ECTs can significantly extend transistor capabilities for future electronic applications.
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