发明名称 |
Single crystal of highly purified hexagonal boron nitride capable of far ultraviolet high-luminance light emission, process for producing the same, far ultraviolet high-luminance light emitting device including the single crystal, and utilizing the device, solid laser and solid light emitting unit |
摘要 |
A highly pure hexagonal boron nitride single crystal not influenced by impurities and capable of high-luminance short wave ultraviolet light emission reflecting inherent characteristics is provided; a high-luminance ultraviolet light emitting element is provided by using the above single crystal; and utilizing the above element, a simple compact low-cost long-lived far ultraviolet solid-state laser and far ultraviolet solid-state light emitting apparatus are provided. A highly pure hexagonal boron nitride single crystal having a single light emission peak in the far ultraviolet region of up to a wavelength of 235 nm is produced by melting said boron nitride crystal as raw material in the presence of a highly pure solvent under high-temperature and high-pressure, followed by crystallization. A light emitting element or a light emitting layer comprised of the obtained crystal is excited with electron beams, and the thus generated far ultraviolet light resonated or without resonation is taken out.
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申请公布号 |
US2006185577(A1) |
申请公布日期 |
2006.08.24 |
申请号 |
US20040566722 |
申请日期 |
2004.11.17 |
申请人 |
NATIONAL INSTITUTE FOR MATERIALS SCIENCE |
发明人 |
WATANABE KENJI;TANIGUCHI TAKASHI;KOIZUMI SATOSHI;KANDA HISAO;KATAGIRI MASAYUKI;YAMADA TAKATOSHI;MILOS NESLADEK |
分类号 |
H01L21/322;B01J3/06;C09K11/63;C30B29/38;H01S5/323 |
主分类号 |
H01L21/322 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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