To provide a selective production method for a gallium oxide single crystal composite having on its uppermost surface, the gallium nitride layer comprising cubic or hexagonal gallium nitride, and also to provide a method of producing a nitride semiconductor film.
This invention relates to a method for production of the gallium oxide single crystal composite having the gallium nitride layer on the surface layer portion of a substrate comprising the gallium oxide single crystal. The gallium nitride layer having its uppermost surface of a cubic or hexagonal crystal measured by a reflection high-energy electron diffraction is selectively produced by controlling the time required for nitriding when forming the gallium nitride layer through the nitriding of the substrate surface by a nitrogen plasma. The nitride semiconductor film is produced by growing it on the above composite.
ARAKI TSUTOMU
OHIRA SHIGEO
SUZUKI SATOHITO
RITSUMEIKAN
Tomohiro Nakamura
Kazuya Sasaki
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