Figure 1 (a) Schematic of the CVD setup for MoS 2  growth
and (b)
the CVD growth parameters. (c) Top view of the placement of substrates
on the top and sides of the crucible. (d) Side view of the schematic
explaining escaping vapors from the crucible and their deposition
on the target substrates. The growth on the top SiO 2  substrates:
(e) Deposition of MoO 3  and NaCl vapors on the top substrate.
(f) Sulfurization of nucleation sites in the middle of the substrate
resulting in bulk MoS 2  growth in the middle and crystals
around the edges. (g) OM image of the MoS 2  growth on the
top substrate. Growth on SiO 2  substrates placed on the
sides of the crucible: (h) Deposition of the MoO 3  and NaCl
vapors on the target substrate, (i) sulfurization of nucleation sites
resulting in the growth of large area MoS 2  crystals, and
(j) OM morphology of the MoS 2  growth on the target substrate.