Epitaxial growth of 3C–SiC on Si(100) by pulsed supersonic free jets of Si(CH3)4 and Si3H8

Heteroepitaxial growth of 3C–SiC on Si(100) by pulsed supersonic free jets of Si(CH3)4 and Si3H8 with various mixture ratios has been investigated. The heteroepitaxy is achieved at the substrate temperature of 900 °C without any carbonization process. The films grown by pure Si(CH3)4 contain inverse pyramidal pits surrounded by the {111} planes of Si, while {311} faceted pits are formed by mixing Si(CH3)4 with a small amount of Si3H8. When the Si3H8/Si(CH3)4 ratio further increases, pit formation is suppressed and instead Si islands are epitaxially grown from the pit region.