Abstract
We have investigated the near-interface characterization of diamond films grown on Si(100) substrates by means of a hot-filament chemical-vapor-deposition (HFCVD) method using high-resolution-electron microscopy (HREM). Atomic scale study of the diamond/Si interface reveals that on the top of the amorphous intermediate layer, there exists a precursor phase which seems to be a diamond-like structure, which provides a suitable site for subsequent diamond nucleation. High density crystal defects directly originate from the precursor phase. HREM images also reveal that during the deposition Si recrystallizes in some damaged areas left by pretreatment, such as scratching grooves. In the recrystallization process twins and microtwins can be formed, and amorphous solid is left in the Si crystals.
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Jiang, N., Hatta, A., Ito, T. et al. Electron microscopic interfacial analysis of diamond film grown on silicon substrate. Journal of Materials Research 11, 1783–1786 (1996). https://doi.org/10.1557/JMR.1996.0223
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DOI: https://doi.org/10.1557/JMR.1996.0223