表面织构对红光LED发光的影响  

Effects of Surface Texture on the Light Emission of Red LEDs

作　　者：宋小伟[1] 李建军[1] 韩军[1] 邓军[1] 陈依新[1] 孙昊[1] 蒋文静[1] 沈光地[1] 

机构地区：[1]北京工业大学光电子技术实验室,北京100022

出　　处：《Journal of Semiconductors》2008年第7期1365-1368,共4页半导体学报（英文版）

基　　金：北京市属市管高等学校人才强教计划;国家自然科学基金(批准号:60407009);北京市自然科学基金(批准号:4032007);北京市教委资助项目~~

摘　　要：运用蒙特卡罗法模拟二维红光LED表面织构对LED光提取效率的影响.模拟了不同形状的表面织构对应的光强变化率.选取刻蚀深度为4μm、腐蚀宽度为2μm、倾角为40°、周期为2μm的表面图形对LED进行粗化实验.结果显示,引入表面织构后光强比常规LED提高了20.56%;并对模拟结果与实验结果进行了分析,结果表明引入表面织构可以有效地提高LED的光提取效率.This paper will discuss the influence of the surface texture on the optical properties of LEDs by using the Monte Carlo method to simulate two dimensional red LEDs. The surface texture, which has a 4μm etching depth, 2μm etching width,40 degree obliquity, and 2μm cycle,is formed by chemical etching. The experimental result indicates that the light-intensity increased by 20.56%. After analyzing the result of this simulation and experiment, we conclude that this method of introducing the surface texture has an effective impact on the light-intensity of LEDs

关 键 词：表面织构 蒙特卡罗 发光二极管 

分 类 号：TN312.8[电子电信—物理电子学]