Invention Grant
US09099493B2 Semiconductor device with raised source/drain and replacement metal gate
有权
具有升高的源极/漏极和替换金属栅极的半导体器件
- Patent Title: Semiconductor device with raised source/drain and replacement metal gate
- Patent Title (中): 具有升高的源极/漏极和替换金属栅极的半导体器件
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Application No.: US14601745Application Date: 2015-01-21
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Publication No.: US09099493B2Publication Date: 2015-08-04
- Inventor: Kangguo Cheng , Junli Wang , Keith Kwong Hon Wong , Chih-Chao Yang
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Harrington & Smith
- Agent Louis J. Percello
- Main IPC: H01L21/00
- IPC: H01L21/00 ; H01L29/66 ; H01L29/786 ; H01L21/28 ; H01L21/74 ; H01L29/06

Abstract:
In a method of fabricating a semiconductor device, a silicon-on-insulator (SOI) substrate is provided. This SOI substrate comprises a buried oxide layer and an ETSOI layer between the buried oxide layer and a surface of the SOI substrate. A dummy gate is formed on the ETSOI. At least two raised source/drain regions are epitaxially formed adjacent to the dummy gate, and a protective cap is formed thereon. An etch process employing at least one acid is used to remove the dummy gate from the ETSOI. A gate dielectric layer is deposited on the protective cap and the ETSOI after removing the dummy gate. A replacement metal gate is then formed on the gate dielectric layer to replace the removed dummy gate, the gate dielectric layer is removed from the protective metal cap, and the protective cap is removed from the raised source/drain regions.
Public/Granted literature
- US20150132898A1 Semiconductor Device With Raised Source/Drain And Replacement Metal Gate Public/Granted day:2015-05-14
Information query
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