A novel method for the synthesis of MoSSe using an (Et 4 N) 2 [Mo 3 S 4 Se 3 Br 6 ] complex as the sole precursor.

MoSSe is a semiconducting material with a layered structure similar to MoS ₂ and MoSe ₂ , which shows potential applications in optoelectronics, solar cells, sensing, and catalysis. Synthesis of this material with a controllable structure and chemical composition represents a great challenge. Herein, we report a new method for the synthesis of MoSSe by employing an [Et ₄ N] ₂ [Mo ₃ S ₄ Se ₃ Br ₆ ] complex as the sole precursor. Thermal annealing of this complex under an Ar atmosphere at moderate temperatures ranging from 350 °C to 650 °C resulted in the formation of pure MoSSe. The morphology and structure of MoSSe were characterized using SEM, HRTEM, XRD, Raman spectroscopy, X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS). The effects of annealing temperature on the structure of MoSSe were also examined.