Effect of Post-Synthesis Treatments on 1L-MoS2 Nanocomposite Properties

Recent advances in two-dimensional (2D) nanomaterials have created new opportunities in the fields of photonics, optoelectronics and sensing.[1] Monolayer Van der Waals materials, such as semiconducting transition metal dichalcogenides (TMDs), are particularly valuable because of their atomic-scale thickness, direct bandgap, and excellent electronic and mechanical properties.[2] Within this family, monolayer molybdenum disulfide (1L-MoS2) stands out as a model material due to its natural abundance and attracting optical properties like a bright photoemission centered at 1.8eV, which originates from direct excitonic recombination across the bandgap of the material.[3] This property is closely linked to the material's strain and doping levels, both of which are influenced by interactions into a heterostructure or with the substrate. Additionally, defects introduced during the synthesis can significantly impact its optical and electronic performances.[4]