Patent ID: 9240323
Filing Date: 2016-01-19
CPC Classification: H01L

Claim Text:
1. A method of forming a semiconductor device comprising: forming an opening that exposes a surface of an elevated source/drain region; and forming a metal-silicide in the elevated source/drain region to include a silicide lower profile that is remote from the surface, the silicide lower profile having a curved cross-section, wherein the metal-silicide includes an upper recess having a bottom and a sidewall, wherein the bottom is separated from a bottom of the silicide lower profile by a distance that is greater than a distance by which the sidewall of the recess is separated from a sidewall of the silicide lower profile, wherein the sidewall of the recess is coplanar with a sidewall of the opening, wherein a diameter of a bottom of the opening is 20 nm or less.