发明申请
- 专利标题： Semiconductor light emitting devices with graded compositon light emitting layers
- 专利标题（中）： 具有分级组合发光层的半导体发光器件
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申请号： US10977867申请日： 2004-10-29
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公开(公告)号： US20060091404A1公开(公告)日： 2006-05-04
- 发明人: Yu-Chen Shen , Michael Krames , Nathan Gardner
- 申请人： Yu-Chen Shen , Michael Krames , Nathan Gardner
- 主分类号： H01L27/15
- IPC分类号： H01L27/15 ; H01L29/26 ; H01L31/12 ; H01L33/00
摘要：
A III-nitride light emitting layer in a semiconductor light emitting device has a graded composition. The composition of the light emitting layer may be graded such that the change in the composition of a first element is at least 0.2% per angstrom of light emitting layer. Grading in the light emitting layer may reduce problems associated with polarization fields in the light emitting layer. The light emitting layer may be, for example InxGa1-xN, AlxGa1-xN, or InxAlyGa1-x-yN.
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