Related Experiment Video
Updated: Jul 2, 2025
09:06
Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
8.1K
Phase-engineered synthesis of atomically thin te single crystals with high on-state currents
Jun Zhou1, Guitao Zhang1, Wenhui Wang1
1School of Physics and Key Laboratory of Quantum Materials and Devices of Ministry of Education, Southeast University, Nanjing, 211189, China.
Nature Communications
|February 16, 2024
Summary
Researchers developed a new method to control the synthesis of two-dimensional (2D) tellurium (Te) phases, enabling advancements in 2D electronics. This controlled synthesis yields stable α-Te and β-Te materials with tunable electronic properties.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- Two-dimensional (2D) tellurium (Te) phases offer potential for advanced electronics and optoelectronics.
- Controlled synthesis of 2D Te at the atomic level is a significant challenge.
- Existing methods lack precise control over phase and thickness.
Purpose of the Study:
- To develop a strategy for phase- and thickness-controlled synthesis of 2D Te.
- To investigate the electronic properties of synthesized α-Te nanosheets and β-Te nanoribbons.
- To assess the air stability and device performance of different Te phases.
Main Methods:
- An atomic cluster density and interface-guided multiple control strategy was designed.
- Synthesis of α-Te nanosheets and β-Te nanoribbons on WS2 substrates.
- Characterization of structural phases, thickness-dependent electronic properties, and device performance.
Main Results:
- Achieved controlled synthesis of α-Te nanosheets and β-Te nanoribbons with tunable thickness.
- α-Te nanosheets showed a transition from metallic to n-type semiconducting behavior with decreasing thickness.
- β-Te nanoribbons exhibited stable p-type semiconducting properties with high ON-state current density and mobility.
- Both phases demonstrated good air stability over several months.
- Short-channel β-Te nanoribbon transistors showed excellent electrical characteristics.
Conclusions:
- The developed strategy enables precise control over 2D Te phase and thickness.
- Synthesized Te phases exhibit promising electronic properties and stability for device applications.
- This work paves the way for novel 2D electronic and optoelectronic devices based on tellurium.
