Journal
DIAMOND AND RELATED MATERIALS
Volume 9, Issue 3-6, Pages 283-289Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0925-9635(99)00333-7
Keywords
bias; heteroepitaxy; silicon carbide; transmission electron microscopy
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Deposition of heteroepitaxial diamond on substrates of 6H-SiC single crystal by a d.c. voltage biased-enhanced microwave plasma chemical vapor deposition method has been attempted. Various concentrations of methane (CH4) up to 10% in hydrogen (H-2) was used to evaluate its effect on epitaxy. Characterization of cross-sectional transmission electron microscopy with electron energy loss spectroscopy shows that an interlayer can form between diamond 6H-SiC, depending on the CH4 concentration. With low CH4 concentration, diamond was directly nucleated on 6H-SiC with an orientation relationship of diamond {111}//6H-SiC {0001} and diamond [110]//6H-SiC [11 (2) over bar 0]. (C) 2000 Elsevier Science S.A. All rights reserved.
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