SEMICONDUCTOR DEVICE

PROBLEM TO BE SOLVED: To make the contact resistance of a SiC substrate and an electrode smaller.SOLUTION: A semiconductor device comprises: a SiC substrate SCS; a silicide layer SLD; and a titanium layer TL. A depth profile in a range of 0.4 tto tof time for sputtering the silicide layer SLD from t...

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Main Authors KAINUMA TAKAHIRO, ARAI TAKESHI, OKAMURA TAKAHIRO, IGARASHI TAKASHI, FUJII YUJI, INAGAWA HIROMI, TOYODA HISASHI
Format Patent
LanguageEnglish
Japanese
Published 28.01.2016
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Summary:PROBLEM TO BE SOLVED: To make the contact resistance of a SiC substrate and an electrode smaller.SOLUTION: A semiconductor device comprises: a SiC substrate SCS; a silicide layer SLD; and a titanium layer TL. A depth profile in a range of 0.4 tto tof time for sputtering the silicide layer SLD from the side of the titanium layer TL includes a region where titanium measured by AES sputtering accounts for 5 atom% of all of atoms measured by AES sputtering, provided that tis a sputtering time taken for measuring a depth profile of the silicide layer SLD in measurement on the silicide layer SLD in a direction from the titanium layer TL toward the SiC substrate SCS by AES(Auger Electron Spectroscopy) sputtering. 【課題】SiC基板と電極の接触抵抗を小さいものにする。【解決手段】チタン層TL側からSiC基板SCS側に向かう方向にシリサイド層SLDをAES(Auger Electron Spectroscopy)スパッタにより測定した場合において、シリサイド層SLDのデプスプロファイルが占めるスパッタ時間をtsとする。この場合、シリサイド層SLDのチタン層TL側からのスパッタ時間が0.4ts以上ts以下の範囲のデプスプロファイルは、AESスパッタにより測定されるチタンがAESスパッタにより測定される全原子に対して5原子%以上となる領域を含んでいる。【選択図】図9
Bibliography:Application Number: JP20140137200