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Ferroelectric-Gated All 2D Field-Effect Transistors with Sub-60 mV/dec Subthreshold Swing
Zhongyang Liu1, Yilin Sun1,2, Yingtao Ding1
1School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing 100081, China.
Researchers developed a novel ferroelectric field effect transistor using 2D materials. This device exhibits excellent performance, including an ultralow subthreshold swing and high carrier mobility, paving the way for efficient nanoscale electronics.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- Conventional transistors face limitations due to scaling and short-channel effects.
- Two-dimensional (2D) ferroelectrics offer nanoscale ferroelectricity with superior properties.
- Ferroelectric field effect transistors (FeFETs) are promising for next-generation electronics.
Purpose of the Study:
- To investigate the modulation of carrier transport by ferroelectric polarization in all-2D van der Waals (vdWs) heterostructure FeFETs.
- To demonstrate the potential of 2D ferroelectrics for high-performance transistors.
Main Methods:
- Fabrication of a ferroelectric field effect transistor using all-2D van der Waals heterostructures.
- Comprehensive study of carrier transport properties under modulation of ferroelectric polarization.
Main Results:
- Achieved an ultralow subthreshold swing of 26 mV/dec.
- Demonstrated high carrier mobility up to 72.3 cm²/(V s) at a low drain voltage of 10 mV.
- Showcased the significant impact of ferroelectric polarization on device performance.
Conclusions:
- Ferroelectric polarization effectively modulates carrier transport in 2D vdWs heterostructures.
- The developed FeFET exhibits exceptional performance metrics for nanoscale applications.
- This work provides new insights into the electrical properties of 2D ferroelectric heterostructures.
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