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Graphene oxide modifications induced by excimer laser irradiations
Author(s) -
Torrisi Alfio,
Velardi Luciano,
Serra Antonio,
Manno Daniela,
Torrisi Lorenzo,
Calcagnile Lucio
Publication year - 2022
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.7066
Subject(s) - graphene , raman spectroscopy , excimer laser , materials science , oxide , laser , irradiation , spectroscopy , laser ablation , excimer , analytical chemistry (journal) , optoelectronics , optics , nanotechnology , chemistry , physics , quantum mechanics , nuclear physics , metallurgy , chromatography
The properties of graphene oxide foils were modified by excimer laser irradiation at different fluences and times. The irradiations were performed in air and in vacuum using a pulsed UV laser operating at 248‐nm wavelength and 23‐ns pulse duration. Measurements of ablation yield, microscope surface morphology and Raman spectroscopy were performed. The residual surface shows a significant oxygen reduction due to the removing of functional oxygen groups, a thickness reduction due to the removal of graphene layers depending on the used laser shots and a presence of defects in the graphene sheets as evident by the Raman spectroscopy investigation.