Patent ID: 9373696
Filing Date: 2016-06-21
CPC Classification: H01L

Claim Text:
1. A method of fabricating a metal silicide, the method comprising the steps of: providing a semiconductor material selected from the group consisting of silicon and silicon germanium; depositing at least one metal on the semiconductor material; performing a first anneal at a temperature and for a duration sufficient to react the at least one metal with the semiconductor material to form an amorphous layer comprising an alloy formed from the at least one metal and the semiconductor material, wherein the temperature at which the first anneal is performed is below a temperature at which a crystalline phase of the alloy is formed; using an etch to selectively remove unreacted portions of the at least one metal; and performing a second anneal at a temperature and for a duration sufficient to crystallize the alloy thus forming the metal silicide, wherein the temperature at which the first anneal is performed is from about 200° C. to about 250° C.