| 光子晶体发光二极管光抽取效率及远场辐射特性的数值研究 |
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| 引用本文： | 王靖,吴立军.光子晶体发光二极管光抽取效率及远场辐射特性的数值研究[J].光子学报,2014,39(8):1500-1504. |
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| 作者姓名： | 王靖 吴立军 |
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| 作者单位： | （华南师范大学 信息光电子科技学院 光子信息技术实验室,广州 510006） |
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| 基金项目： | 国家自然科学基金（10774050）和广东省高等学校科技创新团队项目（06CXTD）资助 |
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| 摘 要： | 运用三维时域有限差分法,研究了完美/缺陷光子晶体特定参量的改变对发光二极管光抽取效率影响,得出优化参量.基于近场远场转换,进一步分析了两种不同类型的缺陷引入及其周边空气孔半径的改变对光子晶体发光二极管远场辐射特性的影响.数值研究的结果表明,通过引入缺陷以及减小缺陷周围空气孔半径能够同时提高光子晶体发光二极管的光抽取效率和远场辐射方向性.
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| 关 键 词： | 发光二极管 光子晶体 时域有限差分法 抽取效率 远场辐射 |
| 收稿时间： | 2010-03-09 |
A Numerical Study of Influence of Photonic Crystals on the Light Extraction Efficiency and Far Field Radiation Characteristics of Light-Emitting Diode |
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| WANG Jing,WU Li-jun.A Numerical Study of Influence of Photonic Crystals on the Light Extraction Efficiency and Far Field Radiation Characteristics of Light-Emitting Diode[J].Acta Photonica Sinica,2014,39(8):1500-1504. |
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| Authors: | WANG Jing WU Li-jun |
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| Affiliation: | (Laboratory of Photonic Information Technology,School for Information and Optoelectronic Science and Engineering,
South China Normal University,Guangzhou 510006,China) |
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| Abstract: | By utilizing the 3D finite-difference time-domain technique,the influence of the photonic crystals with various structure parameters on the light extraction efficiency of light-emitting diode (LED) are studied.Based on the near to far field transformation,the far field radiation characteristics of PhC LEDs for two types of defect with different hole size are investigated.It is found that the light extraction efficiency and energy directionality in the far field radiation can be improved by incorporating defect into the PhCs and decreasing the hole size near to the defect. |
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| Keywords: | Light-emitting diode Photonic crystals Finite-difference time-domain technique Extraction efficiency Far field radiation |
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