Patent ID: 8999800
Filing Date: 2015-04-07
Classification: H01L

Abstract:
1. A method of forming low contact resistance in a substrate, comprising forming a silicide layer on the substrate, the silicide layer and substrate defining an interface therebetween in a source/drain region; and performing a hot implant of a dopant species into the silicide layer while the substrate is at a substrate temperature greater than 150° C., the hot implant effective to generate an activated dopant layer containing the dopant species, the activated dopant layer extending from the interface into the source/drain region, wherein the activated dopant layer comprises a dopant segregated Schottky contact in which a Schottky barrier height between the silicide and source/drain region is lower than a Schottky barrier height between the silicide and source/drain region when the activated dopant layer is not present.