Published online by Cambridge University Press: 28 February 2011
High doses: 1, 3 and 6×1015/cm2 of Ga71+ ions were implanted into <100> silicon at 100keV and annealed in the temperature regime of 550-675° C for seconds to tens of seconds. Two different annealing rigs were used; however the physical and electrical results obtained from each provided remarkably similar results.
We have observed a regrowth rate/dose dependency through both our physical and electrical measurements that provide surprisingly good correlation. We also note that for the highest dose complete solid phase epitaxial regrowth is inhibited, and for temperatures as low as 640°C and times as short as 9sec. onset of movement of the gallium toward the surface is observed. We also show that extremely high free carrier concentrations of gallium can be obtained under the correct anneal conditions.