Epitaxial aluminum carbide formation in 6H–SiC by high-dose Al+ implantation

Abstract
Aluminum carbide precipitates are formed after Al ion implantation with dose 3×1017 cm−2 at 500 °C into single crystalline 6H–SiC. The aluminum carbide (Al4C3) precipitates are in epitaxial relation with 6H–SiC matrix, having the following orientation relation, [0001]6H–SiC//[0001]Al4C3, and [112̄0]6H–SiC//[112̄0]Al4C3, as transmission electron microscopy reveals. The aluminum carbide appears around the maximum of the Al depth distribution. Silicon precipitates were also detected in the same zone.