| 一种基于表面微结构提高LED光提取率的方法 |
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| 引用本文： | 王晓玲,樊彦亭.一种基于表面微结构提高LED光提取率的方法[J].北京机械工业学院学报,2011(3):35-38,48. |
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| 作者姓名： | 王晓玲 樊彦亭 |
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| 作者单位： | 北京信息科技大学光电信息与通信工程学院; |
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| 基金项目： | 北京市教委科技发展计划面上项目(KM200910772005) |
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| 摘 要： | 针对提高发光二极管（LED）光提取率问题，利用LED的发光和表面等离子原理，采用严密耦合波计算方法，在LED表面添加金属周期性亚波长微结构，使表面等离子体耦合的逆过程向另一侧低折射率介质（空气）中辐射出可见光，可增加入射光提取。对不同周期的金属微结构进行模拟，结果表明，金属表面薄膜厚度对表面等离子体产生的影响在临界角25°～40°范围内，微结构不仅使表面等离子再次耦合为透射光，而且还增大了共振峰的深度与宽度。
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| 关 键 词： | 微结构 发光二极管 光提取效率 严密耦合波法 |
Study on enhancement of light extraction efficiency for surface microstructure-based light-emitting diode |
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| WANG Xiao-ling,FAN Yan-ting.Study on enhancement of light extraction efficiency for surface microstructure-based light-emitting diode[J].Journal of Beijing Institute of Machinery,2011(3):35-38,48. |
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| Authors: | WANG Xiao-ling FAN Yan-ting |
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| Affiliation: | WANG Xiao-ling,FAN Yan-ting(School of Photoelectric Information and Telecommunication Engineering,Beijing Information Science and Technology University,Beijing 100101,China) |
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| Abstract: | A method of improving extraction rate of light emitting diode(LED) light is introduceal based on the micro-structure.By adopting rigorous coupled-wave calculation according to the LED structure of its sparkle principle and surface plasma principle,the result is obtacned that when visible light encountered the surface of GaN LEDs with the periodic sub wavelength metal microstructure,it would couple into the metal surface and become surface plasma.Then the surface plasma on the metal surface would couple,by a... |
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| Keywords: | microstructure light emitting diodes light extraction efficiency rigorous coupled-wave analysis |
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