Invention Grant
- Patent Title: Techniques to form uniform and stable silicide
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Application No.: US14617314Application Date: 2015-02-09
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Publication No.: US09373696B2Publication Date: 2016-06-21
- Inventor: Christian Lavoie , Dong-Ick Lee , Ahmet S. Ozcan , Zhen Zhang
- Applicant: GLOBALFOUNDRIES INC.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Roberts Mlotkowski Safran & Cole, P.C.
- Agent David Cain; Andrew M. Calderon
- Main IPC: H01L21/336
- IPC: H01L21/336 ; H01L29/66 ; H01L21/285 ; H01L21/02 ; H01L21/24 ; H01L21/3213 ; H01L21/324 ; H01L29/161

Abstract:
In one aspect, a method of fabricating a metal silicide includes the following steps. A semiconductor material selected from the group consisting of silicon and silicon germanium is provided. A metal(s) is deposited on the semiconductor material. A first anneal is performed at a temperature and for a duration sufficient to react the metal(s) with the semiconductor material to form an amorphous layer including an alloy formed from the metal(s) 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. An etch is used to selectively remove unreacted portions of the metal(s). A second anneal is performed at a temperature and for a duration sufficient to crystallize the alloy thus forming the metal silicide. A device contact and a method of fabricating a FET device are also provided.
Public/Granted literature
- US20150155366A1 Techniques to Form Uniform and Stable Silicide Public/Granted day:2015-06-04
Information query
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