Synthetic 2D crystal films growth by chemical vapour deposition are typically polycrystalline and determining grain size within domains and continuous films is crucial for determining their structure. Here we show that grain boundaries in the 2D transition metal dichalcogenide WS2, grown by CVD can be preferentially oxidized by controlled heating in air. Under our developed conditions, the bulk WS2 remains relatively unaffected, whilst preferential degradation at the grain boundaries causes a...Expand abstract
- Publication status:
- Peer review status:
- Peer reviewed
- Accepted manuscript
- Copyright holder:
- American Chemical Society
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- © 2015 American Chemical Society This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
Controlled preferential oxidation of grain boundaries in monolayer tungsten disulfide for direct optical imaging.
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