Invention Application
- Patent Title: RAISED SOURCE/DRAIN EPI WITH SUPPRESSED LATERAL EPI OVERGROWTH
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Application No.: US14933501Application Date: 2015-11-05
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Publication No.: US20160056238A1Publication Date: 2016-02-25
- Inventor: Kwan-Yong LIM , Jody FRONHEISER , Christopher PRINDLE
- Applicant: GLOBALFOUNDRIES Inc.
- Main IPC: H01L29/08
- IPC: H01L29/08 ; H01L29/78

Abstract:
A method of forming raised S/D regions by partial EPI growth with a partial EPI liner therebetween and the resulting device are provided. Embodiments include forming groups of fins extending above a STI layer; forming a gate over the groups of fins; forming a gate spacer on each side of the gate; forming a raised S/D region proximate to each spacer on each fin of the groups of fins, each raised S/D region having a top surface, vertical sidewalls, and an undersurface; forming a liner over and between each raised S/D region; removing the liner from the top surface of each raised S/D region and from in between a group of fins; forming an overgrowth region on the top surface of each raised S/D region; forming an ILD over and between the raised S/D regions; and forming a contact through the ILD, down to the raised S/D regions.
Information query
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