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. 2019 Aug 15;14:278. doi: 10.1186/s11671-019-3119-3

Fig. 2.

Fig. 2

Mechanically exfoliated flakes and CVD thin films of MoS2 monolayers a before and b after 5-min UV-O3 treatment (dotted region indicates monolayer), c optical absorbance of CVD thin films before and after 5-min UV-O3 treatment