Power density effects on the growth of microcrystalline silicon-carbon alloys by PECVD

U. Coscia, G. Ambrosone, S. Lettieri, P. Maddalena, P. Rava, C. Minarini

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Hydrogenated microcrystalline silicon-carbon films (μc-SiC:H) have been grown in a plasma enhanced chemical vapor deposition system in low power regime, by silane+methane gas mixtures highly diluted in hydrogen. The effects of RF power density on the film properties and on the amorphous to crystalline phase transition have been investigated. The increase of the RF power density causes the decrease of the crystallinity degree and crystallite grain size and an increment in carbon incorporation. XRD analysis shows that μc-SiC:H alloys with higher dark conductivity (> 10-2Ω-1cm-1) contain silicon and carbon (3R graphite) crystallites, having average grain size of 200 Å, embedded in an amorphous silicon-carbon matrix. In low power regime μc-SiC:H films can be grown at low substrate temperature (200 °C). © 2002 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)284 - 288
Number of pages5
JournalThin Solid Films
Issue number1-2
Publication statusPublished - 3 Mar 2003
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Coscia, U., Ambrosone, G., Lettieri, S., Maddalena, P., Rava, P., & Minarini, C. (2003). Power density effects on the growth of microcrystalline silicon-carbon alloys by PECVD. Thin Solid Films, 427(1-2), 284 - 288. https://doi.org/10.1016/S0040-6090(02)01145-8