Patent ID: 9293554
Filing Date: 2016-03-22
CPC Classification: H01L

Claim Text:
1. A method of forming a semiconductor structure comprising: providing a source region and a drain region at a footprint of a functional gate structure; forming a source-side metal semiconductor alloy portion on said source region, and a drain-side metal semiconductor alloy portion on said drain region; depositing a transition metal on at least said source-side metal semiconductor alloy portion and said drain-side metal semiconductor alloy portion, wherein during said depositing said transition metal reacts in-situ with said source-side metal semiconductor alloy portion forming a source-side transition metal-metal semiconductor alloy portion on a surface of said source-side metal semiconductor alloy portion, and said transition metal reacts in-situ with said drain-side metal semiconductor alloy portion forming a drain-side transition metal-metal semiconductor alloy portion on a surface of said drain-side metal semiconductor alloy portion; and removing remaining portions of said transition metal.