Invention Grant
- Patent Title: Semiconductor fabrication process including an SiGe rework method
- Patent Title (中): 半导体制造工艺包括SiGe返工方法
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Application No.: US12172756Application Date: 2008-07-14
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Publication No.: US07955936B2Publication Date: 2011-06-07
- Inventor: Yong Siang Tan , Chung Woh Lai , Jin-Ping Han , Henry K. Utomo , Judson R. Holt , Eric Harley , Richard O. Henry , Richard J. Murphy
- Applicant: Yong Siang Tan , Chung Woh Lai , Jin-Ping Han , Henry K. Utomo , Judson R. Holt , Eric Harley , Richard O. Henry , Richard J. Murphy
- Applicant Address: SG Singapore US NY Armonk US CA San Jose DE Neubiberg
- Assignee: Chartered Semiconductor Manufacturing Ltd.,International Business Machines Corporation,Infineon Technologies North America Corp.,Infineon Technologies North America Corp.
- Current Assignee: Chartered Semiconductor Manufacturing Ltd.,International Business Machines Corporation,Infineon Technologies North America Corp.,Infineon Technologies North America Corp.
- Current Assignee Address: SG Singapore US NY Armonk US CA San Jose DE Neubiberg
- Agency: Brinks Hofer Gilson & Lione
- Main IPC: H01L21/336
- IPC: H01L21/336

Abstract:
A method for fabricating a semiconductor device includes forming an SiGe region. The SiGe region can be an embedded source and drain region, or a compressive SiGe channel layer, or other SiGe regions within a semiconductor device. The SiGe region is exposed to an SC1 solution and excess surface portions of the SiGe region are selectively removed. The SC1 etching process can be part of a rework method in which overgrowth regions of SiGe are selectively removed by exposing the SiGe to and SC1 solution maintained at an elevated temperature. The etching process is carried out for a period of time sufficient to remove excess surface portions of SiGe. The SC1 etching process can be carried out at elevated temperatures ranging from about 25° C. to about 65° C.
Public/Granted literature
- US20100009502A1 Semiconductor Fabrication Process Including An SiGe Rework Method Public/Granted day:2010-01-14
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