Invention Grant
- Patent Title: Self-aligned implants for silicon carbide (SiC) technologies and fabrication method
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Application No.: US16785491Application Date: 2020-02-07
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Publication No.: US11222782B2Publication Date: 2022-01-11
- Inventor: Amaury Gendron-Hansen , Bruce Odekirk
- Applicant: Microchip Technology Inc.
- Applicant Address: US AZ Chandler
- Assignee: Microchip Technology Inc.
- Current Assignee: Microchip Technology Inc.
- Current Assignee Address: US AZ Chandler
- Agency: Glass and Associates
- Agent Kenneth Glass; Kenneth D'Alessandro
- Main IPC: H01L21/02
- IPC: H01L21/02 ; H01L21/04 ; H01L27/092 ; H01L21/67

Abstract:
A method for fabricating a silicon carbide semiconductor device includes providing a SiC epitaxial layer disposed over a surface of a SiC substrate, forming an implant aperture in a hardmask layer on a surface of the expitaxial SiC layer, implanting contact and well regions in the SiC epitaxial layer through the hardmask layer, the contact region lying completely within and recessed from edges of the well region by performing one of implanting the well region through the implant aperture, reducing the area of the implant aperture forming a reduced-area contact implant aperture and implanting the contact region through the reduced-area implant aperture to form a contact region, and implanting the contact region through the implant aperture, increasing the area of the implant aperture to form a increased-area well implant aperture and implanting the well region through the increased-area implant aperture to form a well region completely surrounding the contact region.
Public/Granted literature
- US20210225645A1 SELF-ALIGNED IMPLANTS FOR SILICON CARBIDE (SIC) TECHNOLOGIES AND FABRICATION METHOD Public/Granted day:2021-07-22
Information query
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