High dose Al + implanted and microwave annealed 4H-SiC

A post implantation microwave annealing technique has been used for the electrical activation of Al + implanted ions in semi-insulating 4H-SiC. The annealing temperatures have been 2000-2100°C. The implanted Al concentration has been varied from 5 × 10 19 to 8 × 10 20 cm -3. A minimum resistivity of 2 × 10 -2 Ω·cm and about 70% electrical activation of the implanted Al has been measured at room temperature for an implanted Al concentration of 8 × 10 20 cm -3 and a microwave annealing at 2100°C for 30s.
QC 20120807