Interface of ZnS single sheet and substrates: a first-principles study

Two-dimensional materials have aroused great interests because of their unique properties not seen in the bulk counterparts. The interface of the ZnS single sheet and substrates are studied in this paper. Different from isolated ZnS single sheet, here in this study, the ZnS single sheet has a remarkable corrugation feature because of the interaction between the ZnS single sheet and the substrate. The top-site Zn means an attractive reaction with the substrate while the top-site S means repulsive. For ZnS single sheet/Si(111) interface, the symmetry of the interface does not decrease after geometry optimization because the two layers have a good lattice matching. For ZnS single sheet/Ag(111) interface, an unbalanced interaction (attractive or repulsive) between the ZnS single sheet (Zn or S atom) and Ag surface leads to remarkable corrugation of the ZnS single sheet and the symmetry of the interface decreases. Copyright (c) 2017 John Wiley & Sons, Ltd.