Invention Grant
- Patent Title: Method for producing epitaxial silicon carbide wafer
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Application No.: US15032433Application Date: 2015-02-27
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Publication No.: US09957639B2Publication Date: 2018-05-01
- Inventor: Takashi Aigo , Wataru Ito , Tatsuo Fujimoto
- Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2014-038498 20140228
- International Application: PCT/JP2015/055893 WO 20150227
- International Announcement: WO2015/129867 WO 20150903
- Main IPC: C30B25/20
- IPC: C30B25/20 ; C30B29/36 ; C30B25/16 ; C23C16/32 ; C23C16/44 ; C30B25/08 ; C30B25/10 ; H01L21/02

Abstract:
The present invention provides a method for producing an epitaxial silicon carbide wafer comprising epitaxially growing SiC on an SiC substrate to produce an epitaxial SiC wafer during which further reducing stacking faults and comet defects than the conventional technologies to obtain an epitaxial SiC wafer having a high quality epitaxial film. The method for producing the epitaxial silicon carbide wafer is characterized in that a pre-growth atmosphere gas flowing into the growth furnace before the start of epitaxial growth contains hydrogen gas and has a balance of an inert gas and unavoidable impurities, and the hydrogen gas is contained in 0.1 to 10.0 vol % with respect to the inert gas.
Public/Granted literature
- US20160251775A1 METHOD FOR PRODUCING EPITAXIAL SILICON CARBIDE WAFER Public/Granted day:2016-09-01
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