- 专利标题: Techniques to form uniform and stable silicide
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申请号: US14617314申请日: 2015-02-09
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公开(公告)号: US09373696B2公开(公告)日: 2016-06-21
- 发明人: Christian Lavoie , Dong-Ick Lee , Ahmet S. Ozcan , Zhen Zhang
- 申请人: GLOBALFOUNDRIES INC.
- 申请人地址: KY Grand Cayman
- 专利权人: GLOBALFOUNDRIES INC.
- 当前专利权人: GLOBALFOUNDRIES INC.
- 当前专利权人地址: KY Grand Cayman
- 代理机构: Roberts Mlotkowski Safran & Cole, P.C.
- 代理商 David Cain; Andrew M. Calderon
- 主分类号: H01L21/336
- IPC分类号: H01L21/336 ; H01L29/66 ; H01L21/285 ; H01L21/02 ; H01L21/24 ; H01L21/3213 ; H01L21/324 ; H01L29/161
摘要:
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.
公开/授权文献
- US20150155366A1 Techniques to Form Uniform and Stable Silicide 公开/授权日:2015-06-04
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