发明申请
- 专利标题: ULTRAVIOLET SEMICONDUCTOR LIGHT-EMITTING ELEMENT
- 专利标题(中): ULTRAVIOLET半导体发光元件
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申请号: US13704679申请日: 2011-06-17
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公开(公告)号: US20130082297A1公开(公告)日: 2013-04-04
- 发明人: Norimichi Noguchi , Kenji Tsubaki , Takayoshi Takano
- 申请人: Norimichi Noguchi , Kenji Tsubaki , Takayoshi Takano
- 申请人地址: JP Osaka
- 专利权人: PANASONIC CORPORATION
- 当前专利权人: PANASONIC CORPORATION
- 当前专利权人地址: JP Osaka
- 优先权: JP2010-140907 20100621
- 国际申请: PCT/JP2011/063931 WO 20110617
- 主分类号: H01L33/60
- IPC分类号: H01L33/60
摘要:
An ultraviolet semiconductor light-emitting element comprises a light-emitting layer which is arranged between an n-type nitride semiconductor layer and a p-type nitride semiconductor layer, an n-electrode that is in contact with the n-type nitride semiconductor layer, and a p-electrode that is in contact with the p-type nitride semiconductor layer. The p-type nitride semiconductor layer is provided with a p-type contact layer that has a band gap smaller than that of the light-emitting layer and is in ohmic contact with the p-electrode. A depressed part is formed in a reverse side surface of a surface of the p-type nitride semiconductor layer that faces the light-emitting layer so as to avoid a formation region on which the p-electrode is formed. A reflective film that reflects ultraviolet light emitted from the light-emitting layer is formed on an inner bottom surface of the depressed part.
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