Patent ID: 8372750

Claim:
A method for nickel silicidation, comprising: providing a substrate having a source region, a gate region, and a drain region; forming a source in the source region and a drain in the drain region; annealing the source and the drain; implanting, after annealing the source and the drain, a heavy ion in the source region and the drain region; depositing a nickel layer in each of the source and drain regions; heating the substrate to form a nickel-rich silicide region in each of the source and drain regions by heating the substrate; re-heating the substrate to form the nickel monosilicide; and after forming the nickel monosilicide, causing solid phase epitaxial regrowth of a portion of the substrate by annealing the substrate to recrystallize amorphous silicon that did not silicidize in forming the nickel silicide regions.