发明名称 |
Group III nitride LED with undoped cladding layer and multiple quantum well |
摘要 |
The present invention is a semiconductor structure for light emitting devices that can emit in the red to ultraviolet portion of the electromagnetic spectrum. The structure includes a first n-type cladding layer of AlxInyGa1-x-yN, where 0<=x<=1 and 0<=y<1 and (x+y)<=1; a second n-type cladding layer of AlxInyGa1-x-yN, where 0<=x<=1 and 0<=y<1 and (x+y)<=1, wherein the second n-type cladding layer is further characterized by the substantial absence of magnesium; an active portion between the first and second cladding layers in the form of a multiple quantum well having a plurality of InxGa1-xN well layers where 0<x<1 separated by a corresponding plurality of AlxInyGa1-x-yN barrier layers where 0<=x<=1 and 0<=y<=1; a p-type layer of a Group III nitride, wherein the second n-type cladding layer is positioned between the p-type layer and the multiple quantum well; and wherein the first and second n-type cladding layers have respective bandgaps that are each larger than the bandgap of the well layers. In preferred embodiments, a Group III nitride superlattice supports the multiple quantum well.
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申请公布号 |
US2002195606(A1) |
申请公布日期 |
2002.12.26 |
申请号 |
US20020159893 |
申请日期 |
2002.05.30 |
申请人 |
EDMOND JOHN ADAM;DOVERSPIKE KATHLEEN MARIE;KONG HUA-SHUANG;BERGMANN MICHAEL JOHN;EMERSON DAVID TODD |
发明人 |
EDMOND JOHN ADAM;DOVERSPIKE KATHLEEN MARIE;KONG HUA-SHUANG;BERGMANN MICHAEL JOHN;EMERSON DAVID TODD |
分类号 |
H01L33/02;H01L33/06;H01L33/14;H01L33/32;H01S5/343;(IPC1-7):H01L27/15;H01L31/12;H01L33/00 |
主分类号 |
H01L33/02 |
代理机构 |
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