Invention Grant
- Patent Title: Strained FinFET by epitaxial stressor independent of gate pitch
-
Application No.: US14197433Application Date: 2014-03-05
-
Publication No.: US09647113B2Publication Date: 2017-05-09
- Inventor: Kangguo Cheng , Pouya Hashemi , Ali Khakifirooz , Alexander Reznicek , Charan V. V. S. Surisetty
- 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
- Agent Matthew C. Zehrer
- Main IPC: H01L29/78
- IPC: H01L29/78 ; H01L29/10 ; H01L29/66 ; H01L27/088 ; H01L21/8234 ; H01L21/84

Abstract:
A semiconductor device fabrication process includes forming a fin and a plurality of gates upon a semiconductor substrate, forming sacrificial spacers upon opposing gate sidewalls, forming a mask upon an upper surface of the fin between neighboring gates, removing the sacrificial spacers, recessing a plurality of regions of the fin to create a dummy fin and fin segments, removing the mask, and epitaxially merging the dummy fin and fin segments. The fins may be partially recessed prior to forming the sacrificial spacers. The device may include the substrate, gates, fin segments each associated with a particular gate, the dummy fin between a fin segment pair separated by the wider pitch, and merged epitaxy connecting the dummy fin and the fin segment pair. The dummy fin may serve as a filler between the fin segment pair and may add epitaxial growth planes to allow for epitaxial merging within the wider pitch.
Public/Granted literature
- US20150255543A1 STRAINED FinFET BY EPITAXIAL STRESSOR INDEPENDENT OF GATE PITCH Public/Granted day:2015-09-10
Information query
IPC分类: