| 提高LED光提取效率的研究 |
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| 引用本文： | 熊伟平,范广涵,李琦.提高LED光提取效率的研究[J].光子学报,2014,39(11):1956-1960. |
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| 作者姓名： | 熊伟平 范广涵 李琦 |
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| 作者单位： | （华南师范大学 光电子材料与技术研究所,广州 510631） |
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| 基金项目： | 省部产学研引导项目-大功率白光LED新机构（2009B090300338）和粤港关键领域重点突破项目-发光二极管（LED）外延片材料和生长方法（2007AD10501008）资助 |
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| 摘 要： | 通过模拟计算的方法分析了倒装结构LED中衬底材料折射率及厚度对光提取效率的影响,并在此基础上提出一种新的菱形结构.结果表明:该菱形结构可大幅度提高LED光提取效率,在使用Si、蓝宝石、SiC作为芯片衬底材料时,菱形结构的光提取效率分别提高到传统方形结构的1.51、2.03、3.65倍.
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| 关 键 词： | 光提取效率 倒装结构 菱形结构 衬底 |
| 收稿时间： | 2009-11-09 |
Improvement for the Light Extraction Efficiency of Light-Emitting Diodes |
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| XIONG Wei-ping,FAN Guang-han,LI Qi.Improvement for the Light Extraction Efficiency of Light-Emitting Diodes[J].Acta Photonica Sinica,2014,39(11):1956-1960. |
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| Authors: | XIONG Wei-ping FAN Guang-han LI Qi |
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| Institution: | (Institute of Opto-Electronic Materials and Technology,South China Normal University,Guangzhou 510631,China) |
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| Abstract: | The impact of the refractive index and thickness of substrate on the light extraction efficiency of flip-chip LED is analyzed through simulation analysis.And a new diamond-shaped structure is proposed.The results show that the light extraction efficiency is improved to a good purpose in the diamond-shaped LED,resulting in an increase in the light extraction efficiency by 1.51,2.03 or 3.65 times when the substrate is Si,Sapphire or SiC espectively. |
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| Keywords: | Light extraction efficiency Flip-chip structure Diamond-shaped structure Substrate |
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