Applied Science and Convergence Technology

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 E¹_2g 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 https://doi.org/10.5757/ASCT.2019.28.3.60