...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energies >Scale-Dependent Light Scattering Analysis of Textured Structures on LED Light Extraction Enhancement Using Hybrid Full-Wave Finite-Difference Time-Domain and Ray-Tracing Methods
【24h】

Scale-Dependent Light Scattering Analysis of Textured Structures on LED Light Extraction Enhancement Using Hybrid Full-Wave Finite-Difference Time-Domain and Ray-Tracing Methods

机译：混合结构全波时域有限差分法和光线跟踪法结合纹理结构对LED光提取增强的结构依赖性光散射分析

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A multiscale model that enables quantitative understanding and prediction of the size effect on the scattering properties of micro- and nanostructures is crucial for the design of light-emitting diode (LED) surface textures optimized for high light extraction efficiency (LEE). In this paper, a hybrid process for combining full-wave finite-difference time-domain simulation and a ray-tracing technique based on a bidirectional scattering distribution function model is proposed. We apply this method to study the influence of different pattern sizes of a patterned sapphire substrate on GaN-based LED light extraction from the micro-scale to the nano-scale. The results show that near-wavelength–scale patterns with strong diffraction are not expected to enhance the LEE. By contrast, micro-scale patterns with optical diffusion behavior have the highest LEE at a specific aspect ratio, and subwavelength-scale patterns that have antireflection properties show a marked enhancement of the LEE for a wide range of aspect ratios.
机译：能够定量了解和预测尺寸效应对微结构和纳米结构的散射的多尺度模型，对于设计用于高光提取效率（LEE）的发光二极管（LED）表面纹理的设计至关重要。本文提出了一种基于双向散射分布函数模型的全波有限差分时域仿真与射线追踪技术相结合的混合过程。我们应用这种方法来研究从蓝图到微米尺度的不同图案大小的蓝宝石衬底对GaN基LED光提取的影响。结果表明，具有强衍射作用的近波长标度图样不会增强LEE。相比之下，具有光扩散行为的微尺度图案在特定的长宽比下具有最高的LEE，而具有抗反射特性的亚波长尺度图案在宽高比范围内显示出LEE的显着增强。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号