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首页> 外文会议>Sixth International Conference on Solid State Lighting >The Analysis of Light Extraction Efficiency of the GaN-based LEDs with a Novel Micro-Cavity
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The Analysis of Light Extraction Efficiency of the GaN-based LEDs with a Novel Micro-Cavity

机译：具有新型微腔的GaN基LED的光提取效率分析

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摘要

This paper demonstrates the strong enhancement of light extraction efficiency of light-emitting diodes (LEDs) by a novel three-dimensionally arranged micro-cavity. There are several optimal designed parameters, including chip dimensions, absorption coefficients, the shape of the micro-cavity and package are analyzed on the basis of a Monte-Carlo ray tracing simulation. The most important that studying includes GaN LEDs which are applied to various applications, including traffic signals, backlight system for LCD and outdoor illumination by white light LEDs. The functional of the three-dimensionally arranged micro-cavity is to make the light extraction from LED with high efficiency. The shape of micro-cavities are making like hexagon solids on the top view. The structure were evaluated and simulated by TracePro software respectively. The light extraction efficiency of LED can be greatly improved by three-dimensionally arranged micro-cavity. This study shows that the micro-cavities induced on the surface rather than that inside the LED greatly enhances the light extraction efficiency. This stipulation holds for both sapphire-based and Thin-GaN LEDs. The results indeed identify the attributes of the LED, which make it possible to achieve excellent luminance performance using a GaN-based approach from the LED of "three-dimensionally arranged micro-cavity". This structure was stringent expected to allow a high-efficiency LED, since the illumination systems needed for higher luminance energy can be added independently of the effects.
机译：本文证明了通过新型三维排列的微腔，可大大提高发光二极管（LED）的光提取效率。在蒙特卡洛射线追踪模拟的基础上，分析了几个最佳设计参数，包括芯片尺寸，吸收系数，微腔形状和封装形状。研究中最重要的是应用于各种应用的GaN LED，包括交通信号灯，LCD的背光系统和白光LED的户外照明。三维排列的微腔的功能是使LED的光提取效率更高。在顶视图上，微腔的形状像六边形固体。分别通过TracePro软件对结构进行了评估和模拟。通过三维排列的微腔可以大大提高LED的光提取效率。这项研究表明，在表面而非在LED内部产生的微腔极大地提高了光提取效率。该规定对于基于蓝宝石的LED和Thin-GaN LED均适用。结果确实确定了LED的属性，从而可以使用“三维排列的微腔” LED中的基于GaN的方法实现出色的亮度性能。由于可以独立于效果而添加更高亮度能量所需的照明系统，因此严格要求这种结构可以实现高效率的LED。

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