Epitaxial growth and characterization of Si/NiSi2/Si(111) heterostructures
1989
Abstract Si/NiSi 2 /Si(111) heterostructures are grown under UHV conditions. The well known “template” method is used to produce the epitaxial NiSi 2 interlayer. On top of the suicide, the silicon epitaxial growth is obtained by means of gas phase reaction of SiH 4 at a surface temperature of 500° C. The Si growth rate is strongly enhanced by predissociation of SiH 4 using a hot tungsten filament in the vicinity of the surface. The single steps of the growth are followed in-situ by means of AES, HREELS and LEED analysis. Ex-situ high resolution RBS analysis is also applied for characterization.
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