| 高反射率的AlxGa（1-x）N/AlyGa（1-y）N布拉格反射器的特性研究 |
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| 引用本文： | 李逢君,王涛,姚建铨.高反射率的AlxGa（1-x）N/AlyGa（1-y）N布拉格反射器的特性研究[J].科学技术与工程,2007,7(22):5896-58975914. |
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| 作者姓名： | 李逢君 王涛 姚建铨 |
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| 作者单位： | 天津大学精密仪器与光电子工程学院,激光与光电子研究所,教育部光电信息技术科学重点实验室,天津,300072 |
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| 摘 要： | 简单地介绍了布拉格反射器在发光二极管中的应用概况,并从理论上分析了通过将分布式布拉格反射器应用于紫外发光二极管中可以有效抑制内部吸收,从而获得较大输出能量的原理及方法。定量分析了决定DBR系统性能的几个主要因素之间的关系,即:A.膜层禁带宽度Eg与膜层材料中Al的质量分数之间的关系;B.室温下折射系数与Al的质量分数之间的关系;C.膜层禁带宽度Eg与温度之间的关系。
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| 关 键 词： | 分布布拉格反射器 紫外发光二极管 掺铝浓度 折射系数 |
| 文章编号： | 1671-1819(2007)22-5896-03 |
| 修稿时间： | 2007-06-21 |
Research on the Characteristic of AlxGa1-xN/AlyGa1-yN DBR with High Reflectivity |
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| LI Feng-jun,WANG Tao,YAO Jian-quan.Research on the Characteristic of AlxGa1-xN/AlyGa1-yN DBR with High Reflectivity[J].Science Technology and Engineering,2007,7(22):5896-58975914. |
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| Authors: | LI Feng-jun WANG Tao YAO Jian-quan |
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| Institution: | Institute of Laser and Opto-electronics, College of Precision Instrument and Optoelectronics, Tianjin University, Tianjin 300072, P. R. China |
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| Abstract: | An extensive summary in the application status of distributed Bragg reflectors in LED area and theoretically is analyzed its principle of suppressing the internal absorption in order to fabricate high performance especially for UV-LEDs grown on sapphire substrates with emission wavelengths below 362 nm.And a quantitative analysis on the relationship among the main factors which normally greatly influence the quality of distributed Bragg reflectors was given,such as:A.dependence of the absorption edge on the Al molar fraction,B.index of refraction at room temperature,C.influence of temperature on the optical properties,D.temperature dependence of the refractive index. |
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| Keywords: | DBR UV-LED Al content refractive index |
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