发明名称 |
Epitaxial wafer for GaP pure green light-emitting diode and GaP pure green light-emitting diode |
摘要 |
An epitaxial wafer for a GaP pure green light emitting diode includes an n-type single crystal GaP substrate formed in order thereon with a first n-type GaP epitaxial layer, a second n-type GaP epitaxial layer and a p-type GaP epitaxial layer. The p-type GaP epitaxial layer has a sulfur concentration of not greater than 1x1017 cm31 3, the second n-type GaP epitaxial layer has a carrier concentration on a side thereof interfacing with the p-type GaP epitaxial layer of 0.5-5x1017 cm-3, and the p-type GaP epitaxial layer has a carrier concentration on a side thereof interfacing with the second n-type GaP epitaxial layer that is 1-10x1017 cm-3 and is not less than twice the carrier concentration of the second n-type GaP epitaxial layer on the side thereof interfacing with the p-type GaP epitaxial layer. A GaP pure green light-emitting diode exhibiting high brightness includes the epitaxial wafer, an n-type electrode provided on a back surface of the single crystal substrate and a p-type electrode provided on the upper surface of the p-type GaP epitaxial layer.
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申请公布号 |
US5886369(A) |
申请公布日期 |
1999.03.23 |
申请号 |
US19970965192 |
申请日期 |
1997.11.06 |
申请人 |
SHOWA DENKO K.K. |
发明人 |
HASEGAWA, KOICHI;TAKAHASHI, KOICHIRO |
分类号 |
H01L21/208;H01L33/30;H01L33/40;(IPC1-7):H01L27/15 |
主分类号 |
H01L21/208 |
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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