Invention Grant
- Patent Title: MOSFETs with reduced contact resistance
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Application No.: US13770545Application Date: 2013-02-19
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Publication No.: US09356119B2Publication Date: 2016-05-31
- Inventor: Bruce B. Doris , Kangguo Cheng , Ali Khakifirooz , Pranita Kerber
- Applicant: GLOBALFOUNDRIES INC.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Main IPC: H01L29/66
- IPC: H01L29/66 ; H01L21/285 ; H01L29/08 ; H01L29/417 ; H01L29/45 ; H01L23/485 ; H01L29/165

Abstract:
A method and structure for forming a field effect transistor with reduced contact resistance are provided. The reduced contact resistance is manifested by a reduced metal semiconductor alloy contact resistance and a reduced conductively filled via contact-to-metal semiconductor alloy contact resistance. The reduced contact resistance is achieved in this disclosure by texturing the surface of the transistor's source region and/or the transistor's drain region. Typically, both the source region and the drain region are textured in the present disclosure. The textured source region and/or the textured drain region have an increased area as compared to a conventional transistor that includes a flat source region and/or a flat drain region. A metal semiconductor alloy, e.g., a silicide, is formed on the textured surface of the source region and/or the textured surface of the drain region. A conductively filled via contact is formed atop the metal semiconductor alloy.
Public/Granted literature
- US20130157423A1 MOSFETs WITH REDUCED CONTACT RESISTANCE Public/Granted day:2013-06-20
Information query
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