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Fabrication of Ti3C2 MXene Microelectrode Arrays for In Vivo Neural Recording
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Patterning of Wafer-Scale MXene Films for High-Performance Image Sensor Arrays
Bo Li1,2, Qian-Bing Zhu1,2, Cong Cui1,2
1Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China.
Advanced Materials (Deerfield Beach, Fla.)
|February 28, 2022
Summary
Researchers developed a novel wafer-scale patterning method for MXene films, enhancing resolution and semiconductor process compatibility. This breakthrough enables high-performance MXene image sensors for advanced electronics.
Area of Science:
- Materials Science
- Nanotechnology
- Electronics Engineering
Background:
- MXenes (2D transition metal carbides and nitrides) show promise for electronics and optoelectronics.
- Existing MXene patterning methods suffer from low efficiency, resolution, and compatibility, hindering device integration.
Purpose of the Study:
- To develop a high-performance, wafer-scale patterning method for MXene films.
- To enable the fabrication of high-density MXene-based electronic devices compatible with semiconductor manufacturing.
Main Methods:
- A combination patterning technique involving MXene centrifugation, spin-coating, photolithography, and dry-etching.
- Wafer-scale processing compatible with mainstream semiconductor fabrication.
Main Results:
- Achieved a patterning resolution of up to 2 µm, over 100 times higher than previous large-area methods.
- Fabricated a 1024-pixel Ti3C2Tx/Si photodetector array with high detectivity (7.73 × 10^14 Jones) and an ultrahigh light-dark current ratio (6.22 × 10^6).
Conclusions:
- The developed patterning technique significantly improves MXene film processing for electronic applications.
- This method facilitates the large-scale integration of high-performance MXene-based devices, advancing MXetronics.
