Atomically resolved two-dimensional amorphous nuclei formed during MoS 2 chemical vapor deposition
University of Science and Technology Beijing · Beijing Institute of Technology · +3 more institutions
Abstract
Control over the nucleation and growth of two-dimensional (2D) materials is essential for their scalable manufacturing. We report in situ atomic-scale observations of molybdenum disulfide (MoS 2 ) nucleation and growth through chemical vapor deposition (CVD) using environmental transmission electron microscopy. Coupled with molecular dynamics simulations, our observations reveal the formation of a 2D amorphous structure at the initial nucleation stage, which undergoes an in-plane structural ordering transition into a crystalline nucleus once a critical size is reached. We further captured nuclei merging and oriented attachment processes in the early growth stage, which likely contributed to 2D single-crystal…
Citation impact
- FWCI
- 23.69
- Percentile
- 99%
- References
- 56
Authors
9- HYH. YeCorresponding
University of Science and Technology Beijing
- CWChongteng WuCorresponding
Beijing Institute of Technology, Chongqing University of Technology
- DCDuanyun CaoCorresponding
Beijing Institute of Technology, Chongqing University of Technology
- GZGuorui Zhang
University of Science and Technology Beijing
- YSYinghui Sun
University of Science and Technology Beijing
Topics & keywords
- Nucleation
- Chemical vapor deposition
- Molybdenum disulfide
- Amorphous solid
- Transmission electron microscopy
- Molecular dynamics
- Molybdenum