- 专利标题: Silicon carbide semiconductor device
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申请号: US17234083申请日: 2021-04-19
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公开(公告)号: US11527634B2公开(公告)日: 2022-12-13
- 发明人: Naoyuki Ohse
- 申请人: FUJI ELECTRIC CO., LTD.
- 申请人地址: JP Kawasaki
- 专利权人: FUJI ELECTRIC CO., LTD.
- 当前专利权人: FUJI ELECTRIC CO., LTD.
- 当前专利权人地址: JP Kawasaki
- 代理机构: Rabin & Berdo, P.C.
- 优先权: JPJP2020-101929 20200611
- 主分类号: H01L29/47
- IPC分类号: H01L29/47 ; H01L21/04 ; H01L29/78 ; H01L29/06 ; H01L29/16 ; H01L29/66 ; H01L29/872
摘要:
An SBD of a JBS structure has on a front side of a semiconductor substrate, nickel silicide films in ohmic contact with p-type regions and a FLR, and a titanium film forming a Schottky junction with an n−-type drift region. A thickness of each of the nickel silicide films is in a range from 300 nm to 700 nm. The nickel silicide films each has a first portion protruding from the front surface of the semiconductor substrate in a direction away from the front surface of the semiconductor substrate, and a second portion protruding in the semiconductor substrate from the front surface of the semiconductor substrate in a depth direction. A thickness of the first portion is equal to a thickness of the second portion. A width of the second portion is wider than a width of the first portion.
公开/授权文献
- US20210391437A1 SILICON CARBIDE SEMICONDUCTOR DEVICE 公开/授权日:2021-12-16
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