Semiconducting and Optical Properties of Compact Graphene-Like Nanoparticles of Molybdenum Disulfide

The research in the influence of graphene-like 2H-MoS2 nanoparticle structure on the behavior electroresistivity and optical properties has shown that the conductivity of semiconductor type (n-type) in the compact samples correlates with the particle sizes, in particular the size of 17–53 nm, along the basal plane [100] at a constant number of S–Mo–S nanolayers (n = 6–8) in graphene-like 2H-MoS2 nanoparticles. The mechanism of conductivity is supposed to be hopping conduction with variable hopping length for 2D case. The results of Raman studies indicate a significant impact of anisotropy sizes of 2H-MoS2 nanoparticles in direction [110] under constant number of nanolayers of S–Mo(W)–S on the formation of the structure-sensitive optical properties and, accordingly, the characteristics of the semiconductor as a whole.