GROUP III ELEMENT NITRIDE CRYSTAL PRODUCING METHOD AND GROUP-III ELEMENT NITRIDE CRYSTAL

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United States of America Patent

SERIAL NO

14041366

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A method for producing a high-quality group-III element nitride crystal at a high crystal growth rate, and a group-III element nitride crystal are provided. The method includes the steps of placing a group-III element, an alkali metal, and a seed crystal of group-III element nitride in a crystal growth vessel, pressurizing and heating the crystal growth vessel in an atmosphere of nitrogen-containing gas, and causing the group-III element and nitrogen to react with each other in a melt of the group-III element, the alkali metal and the nitrogen so that a group-III element nitride crystal is grown using the seed crystal as a nucleus. A hydrocarbon having a boiling point higher than the melting point of the alkali metal is added before the pressurization and heating of the crystal growth vessel.

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RICOH COMPANY LTD3-6 NAKAMAGOME 1-CHOME OHTA-KU TOKYO 1438555 ?1438555

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hatakeyama, Takeshi Ehime, JP 87 918
Hiranaka, Kouichi Ehime, JP 10 125
Kawamura, Fumio Osaka, JP 87 965
Kitaoka, Yasuo Osaka, JP 97 1214
Minemoto, Hisashi Osaka, JP 52 587
Mori, Yusuke Osaka, JP 205 925
Sasaki, Takamoto Osaka, JP 2 2
Yamada, Osamu Ehime, JP 227 3662

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