Patent ID: 6274447
Filing Date: 2001-08-14
Classification: H01L

Abstract:
A method of forming a semiconductor device, comprising:(a) providing a semiconductor substrate;(b) forming impurity regions in the semiconductor substrate;(c) amorphizing the impurity regions by implanting atoms that do not function as donors or acceptors into the impurity regions, the atoms being selected from the group consisting of argon, krypton, xenon and germanium;(d) subsequently forming a metal layer on the surface of the impurity regions, the metal being capable of forming a silicide; and(e) thermally treating the device to convert the metal into a silicide wherein first crystal defects are created in the semiconductor substrate by the amorphizing step and second crystal defects are created by a process of repairing the first crystal defects by subsequent thermal processing, and the energy for ion implanting is set such that the first and second defects do not extend beyond the impurity regions.