Invention Grant
- Patent Title: Silicon carbide semiconductor device and method for manufacturing same
- Patent Title (中): 碳化硅半导体器件及其制造方法
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Application No.: US14167717Application Date: 2014-01-29
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Publication No.: US09129804B2Publication Date: 2015-09-08
- Inventor: Hideto Tamaso
- Applicant: Sumitomo Electric Industries, Ltd.
- Applicant Address: JP Osaka-shi
- Assignee: Sumitomo Electric Industries, Ltd.
- Current Assignee: Sumitomo Electric Industries, Ltd.
- Current Assignee Address: JP Osaka-shi
- Agency: Venable LLP
- Agent Michael A. Sartori; F. Brock Riggs
- Main IPC: H01L29/45
- IPC: H01L29/45 ; H01L21/02 ; H01L21/04 ; H01L29/06 ; H01L29/66 ; H01L29/808 ; H01L29/861 ; H01L21/283 ; H01L29/16

Abstract:
The present invention provides a silicon carbide semiconductor device having an ohmic electrode improved in adhesion of a wire thereto by preventing deposition of carbon so as not to form a Schottky contact, as well as a method for manufacturing such a silicon carbide semiconductor device. In the SiC semiconductor device, upon forming the ohmic electrode, a first metal layer made of one first metallic element is formed on one main surface of a SiC layer. Further, a Si layer made of Si is formed on an opposite surface of the first metal layer to its surface facing the SiC layer. The stacked structure thus formed is subjected to thermal treatment. In this way, there can be obtained a silicon carbide semiconductor device having an ohmic electrode adhered well to a wire by preventing deposition of carbon atoms on the surface layer of the electrode and formation of a Schottky contact resulting from Si and SiC.
Public/Granted literature
- US20140170841A1 SILICON CARBIDE SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING SAME Public/Granted day:2014-06-19
Information query
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