Invention Application
US20080179688A1 Method and Apparatus for Semiconductor Device with Improved Source/Drain Junctions
有权
具有改进的源极/漏极结的半导体器件的方法和装置
- Patent Title: Method and Apparatus for Semiconductor Device with Improved Source/Drain Junctions
- Patent Title (中): 具有改进的源极/漏极结的半导体器件的方法和装置
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Application No.: US12058997Application Date: 2008-03-31
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Publication No.: US20080179688A1Publication Date: 2008-07-31
- Inventor: Kong Beng Thei , Chung Long Cheng , Harry Chuang
- Applicant: Kong Beng Thei , Chung Long Cheng , Harry Chuang
- Main IPC: H01L29/78
- IPC: H01L29/78

Abstract:
A semiconductor device with improved source/drain junctions and methods for fabricating the device are disclosed. A preferred embodiment comprises a MOS transistor with a gate structure overlying a substrate, lightly doped source/drain regions formed in the substrate aligned to the gate structure, sidewall spacers formed on the sidewalls of the gate structure and overlying the lightly doped source/drain regions, deeper source/drain diffusions formed into the substrate aligned to the sidewall spacers and additional pocket implants of source/drain dopants formed at the boundary of the deeper source/drain diffusions and the substrate. In a preferred method, the additional pocket implants are formed using an angled ion implant with the angle being between 4 and 45 degrees from vertical. Additional embodiments include recesses formed in the source/drain regions and methods for forming the recesses.
Public/Granted literature
- US07868386B2 Method and apparatus for semiconductor device with improved source/drain junctions Public/Granted day:2011-01-11
Information query
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