Invention Grant
- Patent Title: Contact area to trench silicide resistance reduction by high-resistance interface removal
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Application No.: US14967921Application Date: 2015-12-14
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Publication No.: US09966454B2Publication Date: 2018-05-08
- Inventor: Veeraraghavan S. Basker , Kangguo Cheng , Theodorus E. Standaert , Junli Wang
- 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: Ryan, Mason & Lewis, LLP
- Agent Vazken Alexanian
- Main IPC: H01L27/088
- IPC: H01L27/088 ; H01L29/66 ; H01L23/535 ; H01L29/78 ; H01L21/768

Abstract:
A method for manufacturing a semiconductor device comprises forming a silicide region on a semiconductor substrate, forming a gate structure on the semiconductor substrate adjacent the silicide region, forming a dielectric layer on the gate structure and on the silicide region, forming a first liner layer on the dielectric layer, removing a portion of the first liner layer and a portion of the dielectric layer to form an opening exposing a top surface of the silicide region, forming a second liner layer on the first liner layer and on sides and a bottom of the opening, removing a portion of the second liner layer from a top surface of the first liner layer and from the bottom of the opening to re-expose a portion of the top surface of the silicide region, and forming a contact layer in the opening directly on the re-exposed portion of the top surface of the silicide region.
Public/Granted literature
- US20170170290A1 CONTACT AREA TO TRENCH SILICIDE RESISTANCE REDUCTION BY HIGH-RESISTANCE INTERFACE REMOVAL Public/Granted day:2017-06-15
Information query
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