Dispersion behaviour of two dimensional monochalcogenides

Solution processable two-dimensional (2D) materials have provided an ideal platform for both fundamental studies and wearable electronic applications. Apart from graphene 2D dichalcogenides, IVA-VI metal monochalcogenides (MMCs) has emerged recently as a promising candidate next generation However, the dispersion behavior, which is crucial quality, solubility stability of MMCs, been quite unexplored. Here, exfoliation behavior Germanium (II) monosulfide (GeS) Tin (SnS) nanosheets investigated in wide range organic solvents. Nine different solvents were examined analyzed, considering solvent polarity, surface tension, Hansen parameters. A significant yield isolated GeS SnS flakes, namely ~16.4 ~23.08 μg/ml 2-propanol N-Methyl-2-pyrrolidone respectively attained. The flakes are few-layers with lateral sizes over few hundreds nanometers. MMC colloids exhibit long-term stability, suggesting MMCs applicability scalable solution printed device