Enhancing Both TM- and TE-Polarized Light Extraction Efficiency of AlGaN-Based Deep Ultraviolet Light-Emitting Diode via Air Cavity Extractor With Vertical Sidewall
Enhancing Both TM- and TE-Polarized Light Extraction Efficiency of AlGaN-Based Deep Ultraviolet Light-Emitting Diode via Air Cavity Extractor With Vertical Sidewall
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通过具有垂直侧壁的气腔提取器提高 AlGaN 基深紫外发光二极管的 TM 和 TE 偏振光提取效率
DOI：
10.1109/jphot.2018.2849747
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发表时间：
2018-08
影响因子：
2.4
通讯作者：
Bi Wengang
中科院分区：
文献类型：
--
作者：
Zhang Yonghui;Zheng Yuxin;Meng Ruilin;Sun Ce;Tian Kangkai;Geng Chong;Zhang Zi Hui;Liu Guoxu;Bi Wengang
In this work, we investigate the effect of sidewall angle, height and space of an air cavity extractor (AC-Extractor) on the polarization-dependent light extraction efficiency (LEE) for AlGaN-based deep-ultraviolet light-emitting diodes (DUV LEDs) using three-dimensional finite difference time-domain method. Compared to the reported inclined sidewall metal reflector (SM-Reflector), DUV LED with AC-Extractor shows better light extraction at any height and inclined angle due to different light extraction mechanisms. The light in SM-Reflector DUV LED is extracted mainly through mirror reflection. However, total internal reflection from the sidewall dominants the contribution to LEE for the AC-Extractor with smaller inclined angle such that the space has little impact, while Fresnel scattering is more important for the AC-Extractor with larger inclined angle and that the additional out-light channel as well as the space play a critical role in enhancing the LEE. And the analysis is further developed into a three-escape-cones analytic model theory. In particular, the AC-Extractor with vertical sidewall is more beneficial to enhance the LEE of DUV LED than that with inclined sidewall, which can be rationally explained based on the three-escape-cones analytic model.
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影响因子：
4
作者：
J. Verma;S. Islam;V. Protasenko;P. Kandaswamy;H. Xing;D. Jena
通讯作者：
J. Verma;S. Islam;V. Protasenko;P. Kandaswamy;H. Xing;D. Jena
通过多次曝光纳米球透镜光刻增强复合光子晶体氮化镓基发光二极管的光功率
影响因子：
4
作者：
Zhao, Yun;Zhou, Pengyu;Wang, Junxi;Li, Jinmin
通讯作者：
Li, Jinmin
影响因子：
4
作者：
Jonathan J. Wierer;A. Allerman;I. Montaño;M. Moseley
通讯作者：
Jonathan J. Wierer;A. Allerman;I. Montaño;M. Moseley
影响因子：
7
作者：
Jong Woon Lee;J. H. Park;Dong Yeong Kim;E. Schubert;Jungsub Kim;Jinsub Lee;Yong-ll Kim;Young-soo P
通讯作者：
Jong Woon Lee;J. H. Park;Dong Yeong Kim;E. Schubert;Jungsub Kim;Jinsub Lee;Yong-ll Kim;Young-soo P
影响因子：
4.6
作者：
Lee JW;Kim DY;Park JH;Schubert EF;Kim J;Lee J;Kim YI;Park Y;Kim JK
通讯作者：
Kim JK