Picosecond pulsed laser deposition of MoS.sub.2./sub. thin films

0573259 - FZÚ 2024 RIV CZ eng J - Journal Article
Quiñones-Galvan, J.G. - Mirza, M. Inam - Hrabovský, Jan - Campos-Gonzalez, E. - de Moure-Flores, F. - Santos-Cruz, J. - Santana-Aranda, M.A. - Bulgakov, Alexander - Bulgakova, Nadezhda M.
Picosecond pulsed laser deposition of MoS₂ thin films.
MM Science Journal. Roč. 2023, June (2023), s. 6421-6425. ISSN 1803-1269
R&D Projects: GA MŠMT EF15_003/0000445
Grant - others:OP VVV - BIATRI(XE) CZ.02.1.01/0.0/0.0/15_003/0000445
Institutional support: RVO:68378271
Keywords : 2D materials * picosecond laser ablation * thin films * MoS₂ * PLD * time-of-flight distributions
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 0.7, year: 2022
Method of publishing: Open access

MoS2 thin films were grown by the pulsed laser deposition technique using a picosecond laser at a wavelength of 1030 nm. The plasma ion mean kinetic energy and density were estimated from the time-of-flight distributions measured using a Langmuir planar probe. It has been found that the mean kinetic energy decreases with increasing the laser pulse energy. This unusual effect is explained by the difference in the volatility of the vaporized species. Samples were structurally characterized by Raman spectroscopy and grazing angle X-ray diffraction. It was found that thin films of amorphous matrices containing MoS2 nanocrystallites were grown. Optical characterization carried out by UV-vis spectroscopy yielded transmittance values above 90% in the visible spectral range and an indirect electronic transition at 1.4 eV.
Permanent Link: https://hdl.handle.net/11104/0343729