On the origin of metallicity and stability of the metastable phase in chemically exfoliated MoS2

Amongst the non-graphene layered materials, transition metal dichalcogenides (TMDs) have been in the focus of the research community for quite a long time because of their fascinating properties and novel applications that emerge upon 2D confinement. Specifically, molybdenum disulphide (MoS2) in this series bears great promises for displaying wide range of electronic, mechanical, optical and chemical properties due to the presence of several polymorphs with distinctly different electronic

structures including the possibility of exotic properties such as the quantum spin Hall effect. MoS2 structure is built from two close-packed planes of S2−ions, sandwiching the hexagonal arrangement of Mo4+ layer. [CONTINUE READING]