One-step method to control the temperature of S and Mo source and its effect on the size and morphology of MoS2.

Molybdenum disulfide (MoS₂) is a typical two-dimensional material, which is widely used in many fields because of its excellent electrical and optical properties. In recent years, the high-quality growth of MoS₂ has attracted more and more attention from researchers. Many studies have reported a two-step method for the production of MoS₂ by pre-deposition of molybdenum (Mo) source and then vulcanization, which is cumbersome and time-consuming, and the preparation temperature is mostly above 800 °C, increasing energy consumption and experimental risk. In this paper, S source and Mo source can be distinguished by double temperature zone tube furnace to prepare MoS₂ material in one-step method. The temperatures of S and Mo sources were designed separately, and the effect of each temperature on the quality of MoS₂ was investigated. And the monolayer MoS₂ with high crystalline quality was obtained at a S source temperature of 165 °C and a Mo source temperature of 680 °C. We produce MoS₂ in one-step method at low temperature, which provides a reference for the synthesis of high-quality monolayer MoS₂. [ABSTRACT FROM AUTHOR]