Synthesis of mono/ few layered MoS2 thin films and graphene: MoS2 van der Waal heterostructures using pulsed laser deposition

P. S. Midhun; Anjala Jayaraj; Savitha Nalini; A. S. Asha; K. Rajeev Kumar; M. K. Jayaraj

doi:10.1117/12.2529185

3 September 2019 Synthesis of mono/ few layered MoS₂ thin films and graphene: MoS₂ van der Waal heterostructures using pulsed laser deposition

P. S. Midhun, Anjala Jayaraj, Savitha Nalini, A. S. Asha, K. Rajeev Kumar, M. K. Jayaraj

Author Affiliations +

Proceedings Volume 11089, Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XVI; 110891Y (2019) https://doi.org/10.1117/12.2529185
Event: SPIE Nanoscience + Engineering, 2019, San Diego, California, United States

Abstract

Molybdenum disulpihde mono/few layers were deposited by pulsed laser deposition on graphene substrates thereby forming MoS₂ - graphene van der Waal heterostructures. Initially, the optimization of the growth MoS₂ layers were carried out on thermal oxide silicon (Si/SiO₂) substrate by pulsed laser deposition technique. The difference between two Raman peaks A_1g and E1/2_g modes (▵ƒ) was used to determine the number of layers of the grown MoS₂ thin films. The photoluminescence spectra with two excitonic peaks A and B confirmed the formation of mono/ few layered MoS₂ thin films. Similar growth conditions were used to deposit MoS₂ thin films on CVD grown graphene transferred on to thermally oxidized silicon substrate. The formation of MoS₂ - graphene van der Waal heterostructures were confirmed using Raman analysis.

Citation Download Citation

P. S. Midhun, Anjala Jayaraj, Savitha Nalini, A. S. Asha, K. Rajeev Kumar, and M. K. Jayaraj "Synthesis of mono/ few layered MoS₂ thin films and graphene: MoS₂ van der Waal heterostructures using pulsed laser deposition", Proc. SPIE 11089, Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XVI, 110891Y (3 September 2019); https://doi.org/10.1117/12.2529185

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