Synthesis of High-Quality Monolayer MoS₂ via a CVD Upstream Deposition Strategy for Charge Capture and Collection

Molybdenum disulfide (MoS2) bears great potential in high-performance functional devices because of its tunable band structure, large surface area, and high charge carrier mobility. However, fabricating high-quality monolayer MoS2 via chemical vapor deposition still faces challenges. Here, an upstream deposition strategy is reported to obtain a high-quality monolayer MoS2 with high nucleation density and uniformity. Compared with the conventional downstream deposition method, the upstream deposition method presents excellent morphological characteristics. More importantly, MoS2 prepared by the upstream deposition method shows a stronger charge capture ability at the liquid-solid interface.