Facile synthesis of ternary homogeneous ZnS1−xSex nanosheets with tunable bandgaps

Abstract

The rational design and synthesis of ternary two-dimensional alloy nanocrystals with a non-layered structure are still a challenge. Here, we show, for the first time, the synthesis of homogeneous ternary ZnS_1−xSe_x nanosheets by thermal decomposition of lamellar inorganic–organic hybrid precursors. The morphology, composition and crystal structure of ZnS_1−xSe_x nanosheets have been thoroughly investigated. We also found that the lattice constants and bandgaps of ZnS_1−xSe_x nanosheets could be easily tuned via alteration of the Se/S ratio. Our work provides a facile and effective strategy to synthesize homogeneous multinary non-layered chalcogenide nanosheets with tunable compositions and bandgaps.