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Atom Probe Tomography Studies on the CuIn,GaSe2 Grain Boundaries
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Growth and Grain Boundaries in 2D Materials.
Wenqian Yao1,2, Bin Wu1, Yunqi Liu1,2
1Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Science, Beijing 100190, P.R. China.
ACS Nano
|July 24, 2020
Summary
Grain boundaries (GBs) in 2D materials are critical defects influencing properties and devices. This review covers GB characterization, formation, manipulation, and their impact on material science.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- Grain boundaries (GBs) are ubiquitous lattice imperfections in two-dimensional (2D) materials.
- GBs significantly impact material properties and device performance, making them a key research focus.
Purpose of the Study:
- To review recent advancements in understanding and controlling grain boundaries in 2D materials.
- To consolidate knowledge on GB characterization, formation dynamics, and structure-property relationships.
Main Methods:
- High-resolution transmission electron microscopy (HRTEM) for direct GB imaging.
- Optical microscopy, plasmon propagation, and second harmonic generation for GB visualization.
- Geometric approaches and theoretical considerations for analyzing GB formation dynamics.
Main Results:
- Characterization techniques reveal GB structures across various length scales.
- Dynamic formation processes of GBs during material synthesis are elucidated.
- Strategies for controlling GB density and configuration are summarized, highlighting their effects on material properties.
Conclusions:
- Effective characterization and control of GBs are crucial for tailoring 2D material functionality.
- Further research is needed to fully exploit GBs for advanced device applications and overcome existing challenges.
Keywords:
chemical vapor depositiongrain boundarygraphenehexagonal boron nitridesingle crystalsymmetrytransition metal dichalcogenidestwo-dimensional materialsMore Related Videos
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