A model of the gas-phase chemistry of boron nitride CVD from BCl{sub 3} and NH{sub 3}
Book
·
OSTI ID:470943
- Sandia National Labs., Livermore, CA (United States)
The kinetics of gas-phase reactions occurring during the CVD of boron nitride (BN) from BCl{sub 3} and NH{sub 3} are investigated using an elementary reaction mechanism whose rate constants were obtained from theoretical predictions and literature sources. Plug-flow calculations using this mechanism predict that unimolecular decomposition of BCl{sub 3} is not significant under typical CVD conditions, but that some NH{sub 3} decomposition may occur, especially for deposition occurring at atmospheric pressure. Reaction of BCl{sub 3} with NH{sub 3} is rapid under CVD conditions and yields species containing both boron and nitrogen. One of these compounds, Cl{sub 2}BNH{sub 2}, is predicted to be a key gas-phase precursor to BN.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- OSTI ID:
- 470943
- Report Number(s):
- CONF-951155--; ISBN 1-55899-313-4
- Country of Publication:
- United States
- Language:
- English
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