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Structural Properties and Composition of Graphite-Like Carbon Films Obtained by Pulsed Laser Deposition

Technical Physics, ISSN: 1090-6525, Vol: 66, Issue: 4, Page: 580-587
2021
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Abstract: Structure and composition of graphite-like carbon films obtained by pulsed laser deposition in an inert gas atmosphere using sacrificial carbon tapes are investigated. The deposited films are studied using X-ray diffraction, photoelectron spectroscopy, and Raman spectroscopy. X-ray diffraction analysis shows that the obtained films have a structure characteristic of turbostratic carbon and reduced graphene oxide. Analysis of the photoelectron spectra allows us to draw a conclusion about the significant decrease of oxygen and hydrogen content in the films compared to the target material, as well as significant diminution of the content of the sp-phase. Using Raman spectroscopy, it is shown that carbon films have characteristic features of graphite/graphene and a two-dimensional (turbostratic) structure with characteristic sizes of sp-crystallites of the order of 15–18 nm depending on the density of laser pulse energy.

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