Stacking-controllable interlayer coupling and symmetric configuration of multilayered MoS2

NaCl-assisted APCVD technique to synthesize multi-stacked MoS2 crystals with different stacking orientations and shape has been developed. We found that the stacking orientation of multi-stacked MoS2 crystals shows the underlying variation in the crystalline phases, symmetry inversion, spin–orbit coupling and interlayer interactions through intensive optical study based on Raman spectroscopy, PL spectroscopy and nonlinear technique of FWM correlated SHG imaging technique. Our study based on the crystals with different shape and multiple stacking configurations provide a new avenue for the possibilities of future optoelectronic devices.