Abstract
Rapid thermal annealing of GaAs within an enclosed, SiC‐coated graphite susceptor is shown to eliminate slip formation during implant activation treatments (900 °C, 10 s) and to provide much better protection against surface degradation at the edges of wafers compared to the more conventional proximity method. The peak carrier concentration obtained in Si‐implanted (3×1012 cm2, 60 keV) GaAs by both methods is comparable, but the wafers annealed in the susceptor have tighter carrier profile width distributions measured over the whole wafer area.