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Hydrogen Incorporation in MPCVD Nanocrystalline Diamond Films During the Deposition Process

Published online by Cambridge University Press:  31 January 2011

Dominique Ballutaud
Affiliation:
ballutau@gmail.com
Marie-Amandine Pinault
Affiliation:
Pinault@cnrs-bellevue.fr, CNRS, GEMaC, Meudon, France
François Jomard
Affiliation:
jomard@cnrs-bellevue.fr, CNRS, GEMaC, Meudon, France
Alain Lusson
Affiliation:
lusson@cnrs-bellevue.fr, CNRS, GEMaC, Meudon, France
Samuel Saada
Affiliation:
samuel.saada@cea.fr, CEA, LIST, Gif-sur-Yvette, France
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Abstract

Hydrogen incorporation is studied in two Microwave Plasma CVD nanocrystalline diamond films deposited with prolongated BIAS or not during the growth step. The hydrogen content and bonding forms are analysed by Secondary Ion Mass Spectrometry, Raman and Fourier Transformer Infrared Spectroscopy. Our results show a high hydrogen concentration up to 3.1021 cm-1, as expected in nanocrystalline diamond, and in good agreement with the sp2 phase rate measured by Raman spectroscopy . The FTIR spectra exhibit two sharp peaks at 2850 and 2920 cm-1 and show that a fraction of hydrogen is bonded to sp3 CH2 groups. Hydrogen desorption experiments are performed to analyse the local structure modification of the diamond films.

Type
Research Article
Copyright
Copyright © Materials Research Society 2010

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