Diamond-like carbon thin films produced by femtosecond pulsed laser deposition of fullerite |
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Authors: | A. De Bonis J.V. RauA. Santagata R. Teghil |
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Affiliation: | a Università della Basilicata, Dipartimento di Chimica “A.M. Tamburro”, Via dell'Ateneo Lucano 10-85100, Potenza, Italyb Istituto di Struttura della Materia, CNR, Via del Fosso del Cavaliere 100-00133, Rome, Italyc Istituto Metodologie Inorganiche e Plasmi, CNR, Unità di Potenza, Via S. Loja-85050, Tito Scalo (PZ), Italy |
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Abstract: | Diamond-like carbon films have been deposited from a fullerite target by ultra-short pulsed laser deposition technique. The results indicate that the films morphology and structure, determined by scanning electron microscopy, atomic force microscopy and energy dispersive X-ray diffraction, depend strongly on the substrate temperature. X-ray photoelectron, X-ray Auger electron, Raman and surface enhanced Raman scattering spectra indicate that the fs-DLC films composition involves a mixed sp, sp2 and sp3 carbon network consisting of aromatic rings and sp3 diamond-like structures linked by chains of different lengths and composition. The films deposited at room temperature, presenting the higher content of sp3 carbon (48%), also contain C60 crystalline phase and show a very high hardness of 49 GPa. |
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Keywords: | Ultra-short PLD Diamond-like carbon Fullerite SERS Micro-hardness EDXRD |
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