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A controlled and eco-friendly, scalable CVD method for the production of single and few layer MoS 2 crystals is proposed. The MoS 2 crystals are fabricated at atmospheric pressure through the reaction of pre-deposited sodium molybdate (Na 2 MoO 4) in solution and elemental sulfur at 800 C, offering the flexibility to achieve two growth regimes-either homogeneously distributed single layer MoS 2 crystals or continuous MoS 2 films-by varying the Na 2 MoO 4 solution concentration. In particular, for low precursor concentrations, isolated single layer MoS 2 crystals with controllable mean lateral size were produced. Higher concentrations resulted in continuous single layer films grown in tandem with highly oriented few layer epitaxial domains. The area of the monolayer relative to the few-layer domains can be adjusted. The significant impact on the optical properties of single layer MoS 2 crystals due to the growth …
IOP Publishing
Publication date: 
13 Jun 2018

Antonios Michail, John Parthenios, Dimitris Anestopoulos, Costas Galiotis, Meganne Christian, Luca Ortolani, Vittorio Morandi, Konstantinos Papagelis

Biblio References: 
Volume: 5 Issue: 3 Pages: 035035
2D Materials