Invention Grant
- Patent Title: Fin-last replacement metal gate FinFET
- Patent Title (中): Fin-last替换金属栅极FinFET
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Application No.: US14149295Application Date: 2014-01-07
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Publication No.: US08969965B2Publication Date: 2015-03-03
- Inventor: Josephine B. Chang , Michael A. Guillorn , Wilfried Ernst-August Haensch
- 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: Michael J. Chang, LLC
- Agent Vazken Alexanian
- Main IPC: H01L27/01
- IPC: H01L27/01 ; H01L27/12 ; H01L31/0392 ; H01L29/78 ; H01L29/66 ; H01L29/10

Abstract:
FinFET devices and methods for the fabrication thereof are provided. In one aspect, a method for fabricating a FET device includes the following steps. A wafer is provided having an active layer on an insulator. A plurality of fin hardmasks are patterned on the active layer. A dummy gate is placed over a central portion of the fin hardmasks. One or more doping agents are implanted into source and drain regions of the device. A dielectric filler layer is deposited around the dummy gate. The dummy gate is removed to form a trench in the dielectric filler layer. The fin hardmasks are used to etch a plurality of fins in the active layer within the trench. The doping agents are activated. A replacement gate is formed in the trench, wherein the step of activating the doping agents is performed before the step of forming the replacement gate.
Public/Granted literature
- US20140117464A1 Fin-Last Replacement Metal Gate FinFET Public/Granted day:2014-05-01
Information query
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