Rapid feedback of chemical vapor deposition growth mechanisms by operando X-ray diffraction
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Physical and Life Sciences Directorate
An operando x-ray diffraction system is presented for elucidating optimal laser assisted chemical vapor deposition growth conditions. The technique is utilized to investigate deposition dynamics of boron-carbon materials using trimethyl borate precursor. Trimethyl borate exhibits vastly reduced toxicological and flammability hazards compared to existing precursors, but has previously not been applied to boron carbide growth. Crystalline boron-rich carbide material is produced in a narrow growth regime on addition of hydrogen during the growth phase at high temperature. Finally, the use of the operando x-ray diffraction system allows for the exploration of highly nonequilibrium conditions and rapid process control, which are not possible using ex situ diagnostics.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC52-07NA27344; AC02-06CH11357
- OSTI ID:
- 1430996
- Alternate ID(s):
- OSTI ID: 1426005
- Report Number(s):
- LLNL-JRNL-717099
- Journal Information:
- Journal of Vacuum Science and Technology B, Vol. 36, Issue 2; ISSN 2166-2746
- Publisher:
- American Vacuum Society/AIPCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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