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Ti3C2 (MXene) based field electron emitters
Jiangtao Chen1, Bingjun Yang1,2, Yu Dian Lim3
1Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China.
This study explores MXene (titanium carbide) for field emission applications. MXene paper demonstrates stable electron emission, showing potential as a novel cold electron source for functional devices.
Area of Science:
- Materials Science
- Condensed Matter Physics
Background:
- MXenes are a novel class of two-dimensional materials with significant potential in functional devices.
- Understanding the field emission properties of MXenes is crucial for their application in electron sources.
Purpose of the Study:
- To investigate the field emission behavior of MXene for the first time.
- To evaluate MXene as a potential cold electron source.
Main Methods:
- Fabrication of Ti3C2 MXene paper using a facile filtration method.
- Measurement and simulation of field electron emission performance and electric field distribution.
- Evaluation under both planar and standing emitter conditions.
Main Results:
- MXene paper exhibits high electrical conductivity (2.93 × 10^5 S m^-1) and low work function (3.77 eV).
- Both planar and standing MXene emitters demonstrate stable and uniform electron emission patterns.
- The standing MXene emitter achieved a high emission current density of 59 mA cm^-2 at 7.5 V μm^-1.
Conclusions:
- MXene is a feasible material for cold electron emission.
- This research lays a foundational understanding for MXene's use in field emission-based devices.
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