Oxidation of Monolayer WS2 in Ambient is a Photoinduced Process.

@article{Kotsakidis2019OxidationOM,
  title={Oxidation of Monolayer WS2 in Ambient is a Photoinduced Process.},
  author={Jimmy C. Kotsakidis and Qu Zhang and Amadeo L. V{\'a}zquez de Parga and Marc Currie and Kristian Helmerson and D. Kurt Gaskill and Michael S. Fuhrer},
  journal={Nano letters},
  year={2019}
}
We have studied the ambient air oxidation of chemical vapor deposition (CVD) grown monolayers of the semiconducting transition metal dichalcogenide (S-TMD) WS2 using optical microscopy, laser scanning confocal microscopy (LSCM), photoluminescence (PL) spectroscopy, and atomic force microscopy (AFM). Monolayer WS2 exposed to ambient conditions in the presence of light (typical laboratory ambient light for weeks, or typical PL spectroscopy map), exhibits damage due to oxidation which can be… 

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