发明授权
- 专利标题: Diamond ultraviolet luminescent element
- 专利标题(中): 钻石紫外线发光元件
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申请号: US10019275申请日: 2000-06-29
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公开(公告)号: US06872981B1公开(公告)日: 2005-03-29
- 发明人: Kenji Horiuchi , Takefumi Ishikura , Satoshi Yamashita , Aki Kawamura , Kazuo Nakamura , Kenichi Nakamura , Takahiro Ide
- 申请人: Kenji Horiuchi , Takefumi Ishikura , Satoshi Yamashita , Aki Kawamura , Kazuo Nakamura , Kenichi Nakamura , Takahiro Ide
- 申请人地址: JP Tokyo
- 专利权人: Tokyo Gas Co., Ltd.
- 当前专利权人: Tokyo Gas Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Westerman, Hattori, Daniels & Adrian, LLP
- 优先权: JP11-192554 19990707; JP2000-032096 20000209
- 国际申请: PCTJP00/04301 WO 20000629
- 国际公布: WO0104966 WO 20010118
- 主分类号: H01L27/15
- IPC分类号: H01L27/15 ; H01L33/34 ; H01L29/16
摘要:
A diamond ultraviolet luminescent element (10) having a current-injection light-emitting diode structure includes a high-quality boron-doped p-type diamond crystal (semiconductor layer) (1) synthesized by the high pressure and high temperature method; a phosphorous-doped n-type diamond crystal (n-type semiconductor layer) (3) formed on the first diamond surface by the chemical vapor deposition; an electrode (5) formed on the surface of the n-type semiconductor layer (3); and an electrode (7) formed on the surface of the p-type semiconductor layer (1). The luminescence (235 nm) attributed to the recombination of free excitons resulting from current injection dominates in ultraviolet wavelength region (10).