Journal
PHYSICAL REVIEW B
Volume 88, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.88.035301
Keywords
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Funding
- Academy of Finland [218545, 266924, 263416]
- University of Helsinki Funds
- Finnish Cultural Foundation
- Academy of Finland (AKA) [218545, 263416, 263416, 218545] Funding Source: Academy of Finland (AKA)
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By combining high-resolution transmission electron microscopy experiments and first-principles calculations, we study production, diffusion, and agglomeration of sulfur vacancies in monolayer MoS2 under electron irradiation. Single vacancies are found to be mobile under the electron beam and tend to agglomerate into lines. Different kinds of such extended defects are identified in the experiments, and their atomic structures and electronic properties are determined with the help of calculations. The orientation of line defects is found to be sensitive to mechanical strain. Our calculations also indicate that the electronic properties of the extended defects can be tuned by filling vacancy lines with other atomic species, thereby suggesting a way for strain and electron-beam-assisted engineering of MoS2-based nanostructures .
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