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Atmospheric Pressure Fabrication of Large-Sized Single-Layer Rectangular SnSe Flakes
Published on: March 21, 2018
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Atmospheric Pressure Fabrication of Large-Sized Single-Layer Rectangular SnSe Flakes
Jizhou Jiang1, Calvin Pei Yu Wong2, Wenjing Zhang3
1SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University; Department of Physics, National University of Singapore; 027wit@163.com.
Journal of Visualized Experiments : Jove
|April 10, 2018
Summary
Researchers developed a simple two-step method to grow large, single-layer tin selenide (SnSe) flakes. This breakthrough enables the fabrication of high-quality two-dimensional materials for nanoelectronics.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- Tin selenide (SnSe) is a layered metal chalcogenide with potential in two-dimensional nanoelectronics.
- Synthesizing large, single-layer SnSe flakes remains a significant challenge.
Purpose of the Study:
- To develop a straightforward method for fabricating large-sized, single-layer rectangular SnSe flakes.
- To demonstrate the utility of an atmospheric pressure system for 2D material synthesis.
Main Methods:
- A two-step fabrication process involving vapor transport deposition and nitrogen etching.
- Growth of SnSe flakes on SiO2/Si insulating substrates within an atmospheric pressure quartz tube furnace.
Main Results:
- Successfully fabricated large-sized single-layer rectangular SnSe flakes (~30 µm × 50 µm, ~6.8 Å thickness).
- Characterized flakes exhibiting excellent crystallinity and good electronic properties.
- Demonstrated a scalable method for producing high-quality 2D materials.
Conclusions:
- The presented two-step method offers a simple and effective route for large-scale synthesis of single-layer SnSe.
- This technique is adaptable for growing other large-sized, single-layer two-dimensional materials using atmospheric pressure systems.
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