Invention Grant
- Patent Title: Forming self-aligned NiSi placement with improved performance and yield
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Application No.: US14560049Application Date: 2014-12-04
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Publication No.: US09607989B2Publication Date: 2017-03-28
- Inventor: Xusheng Wu , Yue Hu , Xin Wang , Yong Meng Lee , Wen-Pin Peng , Lun Zhao , Wei-Hua Tong
- Applicant: GLOBALFOUNDRIES Inc.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Ditthavong & Steiner, P.C.
- Main IPC: H01L27/092
- IPC: H01L27/092 ; H01L29/165 ; H01L29/78 ; H01L29/45 ; H01L29/417 ; H01L29/08 ; H01L21/8238 ; H01L29/66 ; H01L21/02 ; H01L21/311 ; H01L21/285 ; H01L29/06 ; H01L21/768

Abstract:
Methods for forming a trench silicide without gouging the silicon source/drain regions and the resulting devices are disclosed. Embodiments include forming first and second dummy gates, each with spacers at opposite sides thereof, on a substrate; forming eSiGe source/drain regions at opposite sides of the first dummy gate; forming raised source/drain regions at opposite sides of the second dummy gate; forming a silicon cap on each of the eSiGe and raised source/drain regions; forming an ILD over and between the first and second dummy gates; replacing the first and second dummy gates with first and second HKMG, respectively; forming a contact trench through the ILD into the silicon cap over each of the eSiGe and raised source/drain regions; and forming a silicide over the eSiGe and raised source/drain regions.
Public/Granted literature
- US20160163702A1 FORMING SELF-ALIGNED NiSi PLACEMENT WITH IMPROVED PERFORMANCE AND YIELD Public/Granted day:2016-06-09
Information query
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