Nucleation and growth during the chemical vapor deposition of diamond on SiO2 substrates

Janet Rankin, Matthew W. Jacobson, Rachel E. Boekenhauei, Roseann Csencsits, Yuzo Shisesato, Brian W. Sheldon

Research output: Contribution to journalArticlepeer-review

Abstract

The early stages of microwave-plasma assisted CVD of diamond on fused silica and silicon substrates were investigated. Nucleation densities on fused silica were somewhat lower than on silicon; however, the diamond growth rates on fused silica were faster. These results suggest that the substrate alters the plasma chemistry near the substrate. Transmission electron microscopy showed a relatively smooth interface between the diamond grains and the Si02 surface. At low nucleation densities, the growth kinetics on both substrates were linear (i.e., the average feature size was proportional to the deposition time), which indicates that the growth kinetics were initially controlled by reaction(s) at the growing diamond surfaces. The transition to nonlinear growth kinetics observed at higher nucleation densities was probably caused by mass-transport limits.

Original languageEnglish (US)
Pages (from-to)2164-2173
Number of pages10
JournalJournal of Materials Research
Volume9
Issue number8
DOIs
StatePublished - Aug 1994

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Nucleation and growth during the chemical vapor deposition of diamond on SiO<sub>2</sub> substrates'. Together they form a unique fingerprint.

Cite this