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Photon-Enhanced Surface Dissociation Effects In Laser Photolysis Of Amorphous Carbon Fromch2i2

Author

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  • KLAUS PIGLMAYER

    (Johannes Kepler University Linz, Institute of Experimental Physics, Department of Applied Physics, A-4040 Linz, Austria)

  • MIKAEL LINDSTAM

    (Uppsala University, Ångström Laboratory, Department of Inorganic Chemistry, Box 538, SE-75121 Uppsala, Sweden)

  • MATS BOMAN

    (IfM, Louisiana Tech University, Ruston, LA 71271, USA)

Abstract

With near-UVAr+-laser-induced photolysis of gaseousCH2I2, efficient, large-area or localized deposition of iodine-free amorphous carbon is possible at room temperature. The method allows a separate substrate heating and thereby a tuning of the deposits properties from soft and polymer-like to diamond-like. This article reports on an observed photon–surface interaction resulting in an enhanced carbon film formation. The shape of the deposit indicates that the deposition process is supported by an increased absorption cross section of surface-adsorbed intermediate molecular fragments, with respect to flat-angle surface-impinging photons.

Suggested Citation

  • Klaus Piglmayer & Mikael Lindstam & Mats Boman, 2001. "Photon-Enhanced Surface Dissociation Effects In Laser Photolysis Of Amorphous Carbon Fromch2i2," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 8(06), pages 609-612.
    • Handle: RePEc:wsi:srlxxx:v:08:y:2001:i:06:n:s0218625x01001555
    DOI: 10.1142/S0218625X01001555
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