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Metal configurations on 2D materials investigated via atomic resolution HAADF stem
Date
2020
Abstract
The behaviour of palladium & nickel deposited on mechanically exfoliated samples of 2D transition metal dichalcogenides (MoS2, WS2, and WSe2) via e-beam evaporation was investigated.Sputtering of metals on the flakes allowed for interaction of the metal and TMD to be investigated on the Å scale in an aberration-corrected transmission electron microscope. By low energy sputtering metals can be deposited on 2D materials without causing damage to the thin flakes. The materials interaction is investigated on the atomic scale via high resolution scanning transmission electron microscopy in high angle annular dark field imaging. Initially, the effect of thermal annealing on the stability of the Pd-2D interaction was investigated, revealing the remarkable difference in particle stability between the 2D materials. Nickel deposition however only resulted in oxidised amorphous particles. The oxide particles’ cross-sectional area and circularity were independent of the TMD substrate thickness or type, and deposition rate.
Supervisor
Description
peer-reviewed
Publisher
John Wiley & Sons, Inc.
Citation
Journal of Microscopy;279 (3), pp. 274-281
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Courtney_2020_Metal.pdf
Adobe PDF, 1.71 MB
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Funding code
Funding Information
Irish Research Council (IRC), Science Foundation Ireland (SFI)
Sustainable Development Goals
External Link
Type
Article
Rights
https://creativecommons.org/licenses/by-nc-sa/1.0/