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AlGaInP LED电极形状的优化 |
| 资料大小: 298 K |
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| 资料作者: 论文发表… |
| 下载扣点: 0 点 |
| 资料类别: 理工ABC |
| 添加时间: 2008-9-14 8:18:10 |
| 下载次数: 本日: 本月: 总计: |
| 资料添加: 审核:enjiatu 录入:enjiatu |
| 中文摘要: |
| 利用有限元法模拟研究四元AlGaInP LED电极形状对电流扩展层GaP中电流分布的影响,通过优化电极形状获得较为均匀分布的电流,以此提高芯片的出光效率和提升产品品质. 在MATLAB计算平台上建立3D载流子输运模型及芯片顶面的光出射模型,比较了传统圆形、十字形、箭形、花形及万字形电极等五种电极形状,研究发现万字形电极的芯片顶面出光效率最高. 进而对其条形电极的宽度进行进一步优化,可获得的出光效率为传统圆形电极的2.7倍,能够为实际生产提供一定的理论指导. |
| 英文摘要: |
| The distribution of current diffusion of the quaternary AlGaInP LED has been simulated by finite element method to study the effect of electrode shape on the current spreading layer GaP. By comparing traditional circular-shape with cross-shape, arrow-shape, floriated-shape and gammadion-shape electrodes, we found that the electrode shape has an important effect on the output efficiency of light, and the light extraction efficiency of gammadion electrode is the highest. As the area of the whole electrode has an effect on the output efficiency, by optimizing the width of the electrode, the light extraction efficiency will be upgraded. For the gammadion electrode, when the width equals to 6.2204 μm, its light extraction efficiency is the highest, which is more than twice that of the traditional round electrode’s. | |
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