Nucleation dynamics of single crystal WS₂ from droplet precursors uncovered by in-situ monitoring.

ABSTRACT: Transition metal dichalcogenides (TMDs) attract intence attention due to its unique optoelectrical features. Recent progress in production stage of TMD enables us to synthesis uniform and large area TMD with mono layer thickness. Elucidation of growth mechanism is a challenge to improve the crystallinity of TMD, which is regargeded as a next crutial subject in the production stage. Here we report novel diffusion and nucleation dynamics during tungsten disulphide (WS₂) growth. The diffusion length (L_d) of the precursors have been measured with unique nucleation control methods. It was revealed that the L_d reaches up to ~750 μm. This ultra-long diffusion can be attributed to precursor droplets observed during in-situ monitoring of WS₂ growth. The i

SUBMITTER: Li C 

PROVIDER: S-EPMC6736981 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature