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Synthesis of mono/ few layered MoS2 thin films and graphene: MoS2 van der Waal heterostructures using pulsed laser deposition
Author(s): P. S. Midhun; Anjala Jayaraj; Savitha Nalini; A. S. Asha; K. Rajeev Kumar; M. K. Jayaraj
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Paper 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 A1g and E1/2g 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.

Paper Details

Date Published: 3 September 2019
PDF: 6 pages
Proc. SPIE 11089, Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XVI, 110891Y (3 September 2019); doi: 10.1117/12.2529185
Show Author Affiliations
P. S. Midhun, Cochin Univ. of Science and Technology (India)
Anjala Jayaraj, Cochin Univ. of Science and Technology (India)
Savitha Nalini, Cochin Univ. of Science and Technology (India)
Sree Narayana College (India)
A. S. Asha, Cochin Univ. of Science and Technology (India)
K. Rajeev Kumar, Cochin Univ. of Science and Technology (India)
M. K. Jayaraj, Cochin Univ. of Science and Technology (India)


Published in SPIE Proceedings Vol. 11089:
Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XVI
Balaji Panchapakesan; André-Jean Attias, Editor(s)

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