Toward smooth MWPECVD diamond films: Exploring the limits of the hydrogen percentage in Ar/H2/CH4 gas mixture.
Abstract
In Ar-rich Ar–H2–CH4 gas mixture the presence of H2 is found to be beneficial to the plasma stability. On the other hand, too high H2 percentages lead to materials showing a high surface roughness. In the present work, diamond films were grown on p-type Si (100) substrates screening different quantities of H2. The plasma phase and plasma–substrate interface were investigated by in-situ optical emission spectroscopy and pyrometric interferometry to determine the behavior of emitting species and the deposition rates, respectively. The obtained films were characterized by Raman micro-spectroscopy, AFM and SEM techniques. For H2 percentages between 6.3 and 10%, the structure and morphology are characteristic of nanocrystalline films, affording low roughness values when a buffer layer was grown between the diamond coating and the treated silicon surface.
Autore Pugliese
Tutti gli autori
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G. Cicala , D. Monéger , D. Cornacchia , P. Pesce , V. MAgaletti , G. Perna , V. Capozzi , M. Tamborra
Titolo volume/Rivista
SURFACE & COATINGS TECHNOLOGY
Anno di pubblicazione
2012
ISSN
0257-8972
ISBN
Non Disponibile
Numero di citazioni Wos
Nessuna citazione
Ultimo Aggiornamento Citazioni
Non Disponibile
Numero di citazioni Scopus
7
Ultimo Aggiornamento Citazioni
Non Disponibile
Settori ERC
Non Disponibile
Codici ASJC
Non Disponibile
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