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Amorphous diamond-like carbon film growth by KrF- and ArF- excimer laser PLD: Correlation with plume properties

机译:通过KrF-和arF-准分子激光pLD生长无定形类金刚石碳膜:与羽流特性的相关性

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A comparative study of ArF- and KrF-laser deposition of amorphous diamond-like carbon (DLC) films and relevant carbon plasmas has been performed. Spectroscopic ellipsometry and EELS analysis of the DLC films deposited on Si <100> and NaCl substrates were utilized to characterize the high quality ArF- and KrF-laser deposited films (up to 84% of sp(sup 3) bonded carbon in 7 J/cm(sup 2) -ArF-laser DLC film). Gated ICCD imaging, luminescence and ion current probe diagnostics of the carbon plume have revealed quite different properties of carbon plasmas generated by ArF- and KrF- lasers. KrF-laser (6.7 J/cm(sup 2)) irradiation produces a less energetic carbon plasma containing larger amounts of C(sub 2) and probably larger clusters compared with ArF-laser irradiation at the same energy fluence. We conclude that the more energetic and highly-atomized ArF-laser carbon plasma results in the better diamond-like properties.

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