发明申请
- 专利标题: SELECTIVELY RAISED SOURCE/DRAIN TRANSISTOR
- 专利标题(中): 选择性提取源/漏极晶体管
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申请号: US13424787申请日: 2012-03-20
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公开(公告)号: US20130249006A1公开(公告)日: 2013-09-26
- 发明人: Ali Khakifirooz , Thomas N. Adam , Kangguo Cheng , Alexander Reznicek
- 申请人: Ali Khakifirooz , Thomas N. Adam , Kangguo Cheng , Alexander Reznicek
- 申请人地址: US NY Armonk
- 专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人地址: US NY Armonk
- 主分类号: H01L27/088
- IPC分类号: H01L27/088 ; H01L21/336
摘要:
A lower raised source/drain region is formed on a planar source/drain region of a planar field effect transistor or a surface of a portion of semiconductor fin adjoining a channel region of a fin field effect transistor. At least one contact-level dielectric material layer is formed and planarized, and a contact via hole extending to the lower raised source/drain region is formed in the at least one contact-level dielectric material layer. An upper raised source/drain region is formed on a top surface of the lower raised source/drain region. A metal semiconductor alloy portion and a contact via structure are formed within the contact via hole. Formation of the upper raised source/drain region is limited to a bottom portion of the contact via hole, thereby preventing formation of, and increase of parasitic capacitance by, any additional raised structure in source/drain regions that are not contacted.
公开/授权文献
- US08592916B2 Selectively raised source/drain transistor 公开/授权日:2013-11-26
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