Redistribution of Fe and Ti implanted into InP

Abstract
The redistribution of Fe and Ti implanted into InP and its recrystallization is studied using various thermal annealing techniques. Fe and Ti profiles are measured by secondary-ion mass spectroscopy and recrystallization by Rutherford backscattering channeling. Ti shows absolutely superior thermal stability under any circumstances as compared to Fe. Iron always accumulates at the surface and at a depth of approximately twice the projected range Rp. After high-dose implantation Fe additionally accumulates in the 0.8Rp region. At similar doses Ti still shows no diffusion and only faint accumulation between the surface and Rp.