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Published online by Cambridge University Press: 01 January 1993
The ability of positrons to probe local defect structures has been utilized to compare differences in residual damage structures in self-irradiated silicon for differing tempera¬tures of the implanted substrate. Sb-doped < 100 > silicon was self irradiated with a 600 keV beam to fluences ranging from 3 x 1014 to 1 X 1016 ions/cm2 at liquid nitrogen, room and slightly elevated (61° C) temperatures. A defect was identified near the end-of-range of the implanted ions whose concentration diminished at higher implant temperatures, but was only weakly dependent on total fluence. Comparison between Sb- and B-doped Si suggests that the defect is impurity based.