发明名称 |
LIGHT EMITTING DIODE WITH POROUS SIC SUBSTRATE AND METHOD FOR FABRICATING |
摘要 |
A method and apparatus for forming a porous layer on the surface of a semiconductor material wherein an electrolyte is provided and is placed in contact with one or more surfaces of a layer of semiconductor material. The electrolyte is heated and a bias is introduced across said electrolyte and the semiconductor material causing a current to flow between the electrolyte and the semiconductor material. The current forms a porous layer on the one or more surfaces of the semiconductor material in contact with the electrolyte. The semiconductor material with its porous layer can serve as a substrate for a light emitter. A semiconductor emission region can be formed on the substrate. The emission region is capable of emitting light omnidirectionally in response to a bias, with the porous layer enhancing extraction of the emitting region light passing through the substrate.
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申请公布号 |
US2005184307(A1) |
申请公布日期 |
2005.08.25 |
申请号 |
US20030676953 |
申请日期 |
2003.09.30 |
申请人 |
CREE, INC. |
发明人 |
LI TING;IBBETSON JAMES;KELLER BERND |
分类号 |
H01L21/3063;H01L31/0236;H01L33/16;H01L33/20;(IPC1-7):H01L33/00 |
主分类号 |
H01L21/3063 |
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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