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首页> 外文期刊>Optical and quantum electronics >Simulation for light power distribution of 3D InGaN/GaN MQW LED with textured surface
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Simulation for light power distribution of 3D InGaN/GaN MQW LED with textured surface

机译：具有纹理表面的3D InGaN / GaN MQW LED的光功率分布仿真

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摘要

In this paper, we introduce a full 3D simulation for light power distribution of an InGaN/GaN MQW LED with a textured surface. Device simulation was performed with the APS YS software to get power distribution of light sources inside the LED. Based on this, ray tracing simulation was carried out to get light power distribution outside the LED. During the process of ray tracing, the textured surface was treated as a special material interface whose reflectivity, transmittance and refraction angle are obtained with a Finite-Difference Time-Domain (FDTD) method instead of using the usual Fresnel formulas for normal material interfaces. By comparing the ray tracing results with and without the textured surface, we found that the textured surface yields a smoother transmitted power distribution and greatly improved power extraction efficiency, which are comparable to experiment. These effects may be further improved by optimizing the texture geometry.
机译：在本文中，我们介绍了具有纹理表面的InGaN / GaN MQW LED的光功率分布的完整3D模拟。使用APS YS软件执行了设备仿真，以获取LED内部光源的功率分配。基于此，进行了光线跟踪仿真，以获取LED外部的光功率分布。在光线追踪过程中，将带纹理的表面视为特殊的材料界面，其反射率，透射率和折射角是通过有限差分时域（FDTD）方法获得的，而不是对常规的材料界面使用常规的菲涅耳公式。通过比较有纹理表面和无纹理表面的光线跟踪结果，我们发现有纹理的表面产生了更平滑的透射功率分布并大大提高了功率提取效率，这与实验相当。通过优化纹理几何形状可以进一步改善这些效果。

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  • 来源
    《Optical and quantum electronics》 |2011年第13期|p.739-745|共7页
  • 作者

    Li-Wen Cheng; Yang Sheng; Chang-Sheng Xia; Wei Lu; Michel Lestrade; Zhan-Ming Li;

  • 作者单位

    National Lab for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences,500 Yu Tian Road, Shanghai 200083, China;

    Crosslight Software China, Suite 906, Building JieDi, 2790 Zhongshan Bei Road, Shanghai 200063,China;

    Crosslight Software China, Suite 906, Building JieDi, 2790 Zhongshan Bei Road, Shanghai 200063,China;

    National Lab for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences,500 Yu Tian Road, Shanghai 200083, China;

    Crosslight Software Inc., 121-3989 Henning Drive, Burnaby, BC V6C 6P7, Canada;

    Crosslight Software Inc., 121-3989 Henning Drive, Burnaby, BC V6C 6P7, Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    InGaN/GaN; light-emitting diode (LED); light power distribution; simulation; textured surface;

    机译：InGaN / GaN;发光二极管（LED）;轻功率分配;模拟;纹理表面;

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