Invention Grant
- Patent Title: Silicide formation due to improved SiGe faceting
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Application No.: US14875343Application Date: 2015-10-05
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Publication No.: US09406769B2Publication Date: 2016-08-02
- Inventor: Shashank S. Ekbote , Kwan-Yong Lim , Ebenezer Eshun , Youn Sung Choi
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Jacqueline J. Garner; Frank D. Cimino
- Main IPC: H01L29/08
- IPC: H01L29/08 ; H01L29/45 ; H01L27/088 ; H01L29/66 ; H01L21/8234 ; H01L27/02 ; H01L29/161 ; H01L21/28 ; H01L29/78 ; H01L29/165 ; H01L29/417

Abstract:
An integrated circuit includes a PMOS gate structure and a gate structure on adjacent field oxide. An epitaxy hard mask is formed over the gate structure on the field oxide so that the epitaxy hard mask overlaps the semiconductor material in PMOS source/drain region. SiGe semiconductor material is epitaxially formed in the source/drain regions, so that that a top edge of the SiGe semiconductor material at the field oxide does not extend more than one third of a depth of the SiGe in the source/drain region abutting the field oxide. Dielectric spacers on lateral surfaces of the gate structure on the field oxide extend onto the SiGe; at least one third of the SiGe is exposed. Metal silicide covers at least one third of a top surface of the SiGe. A contact has at least half of a bottom of the contact directly contacts the metal silicide on the SiGe.
Public/Granted literature
- US20160027888A1 SILICIDE FORMATION DUE TO IMPROVED SiGe FACETING Public/Granted day:2016-01-28
Information query
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