Synthesis of Monolayer Molybdenum Disulfide and ToF-SIMS Characterization

Two dimensional (2D) materials have attracted much attention in the past decade.This family of materials includes metallic graphene and semiconducting transition metal dichalcogenides such as MoS 2 .Due to the excellent mechanical flexibility, electron transportation property, and transparency, 2D materials have great potential applications in electronics, sensor, and supercapacitor.Mechanical exfoliation and chemical vapor deposition (CVD) are two common methods to prepare the monolayer and a few atomic layer films.Because of the high yield and good quality of the monolayer film, the CVD method becomes the main stream to prepare 2D materials.