发明名称 |
SEMICONDUCTOR LIGHT-EMITTING DIODE |
摘要 |
<p>A semiconductor light emitting diode (10) is formed on an n-type GaAs substrate and includes: an AlGaInP based double heterojunction structure in which an active layer (16) is sandwiched between cladding layers (14, 18); an upper P-type contact layer 20; and a ring-shaped upper electrode (22) having an opening (28), wherein light is emitted through the upper p-type contact layer (20) and the opening (28) of the upper electrode (22). The upper p-type contact layer (20) is a semiconductor layer made of AlGaAs or AlGaAsP having an Al content of 0.5 or more, and doped with impurities at a carrier concentration of 5x10<18>cm<-3> or more. The semiconductor light emitting diode emits light in a desired emission pattern and at higher intensities, and is capable of being fabricated by relatively simple processes. <IMAGE></p> |
申请公布号 |
EP0987770(A1) |
申请公布日期 |
2000.03.22 |
申请号 |
EP19990903917 |
申请日期 |
1999.02.15 |
申请人 |
THE FURUKAWA ELECTRIC CO., LTD. |
发明人 |
ISHIKAWA, TAKUYA;ARAKAWA, SATOSHI;MUKAIHARA, TOSHIKAZU;KASUKAWA, AKIHIKO |
分类号 |
H01L33/38;H01L33/10;H01L33/30;H01L33/44;H01L33/46;(IPC1-7):H01L33/00 |
主分类号 |
H01L33/38 |
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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