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表面微腔光子晶体LED的光提取特性

Characteristics of Light Extraction for Surface-Microcavity Photonic Crystal LED

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摘要

提出并研究了一种基于表面微腔光子晶体的发光二极管(LED), 利用多个谐振腔出射光之间的相干耦合作用产生束流准直效应, 从而在提高光提取效率的同时, 也改善了出射光的空间指向性。通过对表面光子晶体LED结构进行优化设计, 使得表面微腔光子晶体LED的光提取效率较完整光子晶体LED提高了77.3%, 而较普通平板LED提高了1.8倍以上。同时, 微腔光子晶体LED相对普通平板LED和完整光子晶体LED来说具有更加明显的远场能量汇聚效应, 让出射光具有更好的空间指向性。

Abstract

In this paper, we propose and study a light-emitting diode (LED) based on the surface-microcavity photonic crystal (PC). The beaming-collimation effect is generated by the coherent-coupling interaction of the emergent light from the multiple resonant cavities. As a result, the light extraction efficiency of LED is improved, as well as the spatial directivity of emergent light. By optimizing the structure of the surface PC LED, the light extraction efficiency of the surface-microcavity PC LED is 77.3% higher than that of the prefect PC LED, and 1.8 times higher than that of the normal slab LED. Simultaneously, the proposed surface-microcavity PC LED has more obvious far-field energy converging effect than prefect PC LED and normal slab LED. This feature ensures the emergent light with better spatial directivity.

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中图分类号:O472+.3;TN312+.8

DOI:10.3788/aos201737.0623004

所属栏目:光学器件

基金项目:国家自然科学基金(11304099)、广东省自然科学基金(s2013040015639)

收稿日期:2016-12-29

修改稿日期:2017-02-08

网络出版日期:--

作者单位    点击查看

胡永禄:华南理工大学物理与光电学院, 广东 广州 510640
刘道柳:华南理工大学物理与光电学院, 广东 广州 510640
王 博:华南理工大学物理与光电学院, 广东 广州 510640
吴俊芳:华南理工大学物理与光电学院, 广东 广州 510640
李 潮:华南理工大学物理与光电学院, 广东 广州 510640

联系人作者:胡永禄(493362139@qq.com)

备注:胡永禄(1990—), 男, 硕士研究生, 主要从事光子晶体发光二极管方面的研究。

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引用该论文

Hu Yonglu,Liu Daoliu,Wang Bo,Wu Junfang,Li Chao. Characteristics of Light Extraction for Surface-Microcavity Photonic Crystal LED[J]. Acta Optica Sinica, 2017, 37(6): 0623004

胡永禄,刘道柳,王 博,吴俊芳,李 潮. 表面微腔光子晶体LED的光提取特性[J]. 光学学报, 2017, 37(6): 0623004

被引情况

【1】田康凯,楚春双,毕文刚,张勇辉,张紫辉. AlGaN基深紫外发光二极管空穴注入效率的提高途径. 激光与光电子学进展, 2019, 56(6): 60001--1

【2】黄乐程,王光毅,薛玉雄,杨生胜. 光子晶体对LYSO闪烁体光输出的影响. 光学学报, 2019, 39(10): 1031001--1

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