首页 | 本学科首页   官方微博 | 高级检索  
     检索      

AlGaInP LED电极形状的优化
引用本文:张俊兵,林岳明,柏林,曾祥华.AlGaInP LED电极形状的优化[J].物理学报,2008,57(9):5881-5886.
作者姓名:张俊兵  林岳明  柏林  曾祥华
作者单位:(1)扬州大学物理科学与技术学院,扬州 225002; (2)扬州华夏集成光电有限公司,扬州 225009
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. 关键词: 出光效率 电极形状 电流扩展 有限元法

关 键 词:出光效率  电极形状  电流扩展  有限元法
收稿时间:1/1/2008 12:00:00 AM

Optimization of the electrode shape of AlGaInP LED
Zhang Jun-Bing,Lin Yue-Ming,Bo Lin,Zeng Xiang-Hua.Optimization of the electrode shape of AlGaInP LED[J].Acta Physica Sinica,2008,57(9):5881-5886.
Authors:Zhang Jun-Bing  Lin Yue-Ming  Bo Lin  Zeng Xiang-Hua
Abstract: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.
Keywords:output efficiency of light  electrode shape  current spreading  finite element method
本文献已被 万方数据 等数据库收录!
点击此处可从《物理学报》浏览原始摘要信息
点击此处可从《物理学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号