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Fig. 3.
Fig. 3. (Color online) Optical microscopy images of as-grown MoS2 grains and films with different growth time; (a) 5, (b) 10, (c) 15, and (d) 20 min, respectively. Continuous supply of (NH4)2S led to the growth of bilayer and few-layer MoS2 grains on monolayer MoS2 film. (e) Statistics of monolayer (1L), bilayer (2L), few-layer (FL), and total MoS2 coverage as a function of the growth time. (f) Raman E12g intensity mapping image corresponding to the red box in (d). (g) Raman and (h) PL spectra measured at region A–C in (f).
Applied Science and Convergence Technology 2019;28:60~65
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