Enhancing the Light-Extraction Efficiency of AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes by Optimizing the Diameter and Tilt of the Aluminum Sidewall

Yung-Min Pai; Chih-Hao Lin; Chun-Fu Lee; Chun-Peng Lin; Cheng-Huan Chen; Hao-Chung Kuo; Zhi-Ting Ye

doi:10.3390/cryst8110420

Crystals (Nov 2018)

Enhancing the Light-Extraction Efficiency of AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes by Optimizing the Diameter and Tilt of the Aluminum Sidewall

Yung-Min Pai,
Chih-Hao Lin,
Chun-Fu Lee,
Chun-Peng Lin,
Cheng-Huan Chen,
Hao-Chung Kuo,
Zhi-Ting Ye

Affiliations

Yung-Min Pai: Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
Chih-Hao Lin: Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
Chun-Fu Lee: Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
Chun-Peng Lin: Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
Cheng-Huan Chen: Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
Hao-Chung Kuo: Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
Zhi-Ting Ye: Department of Electro-Optical Engineering, National United University, 2, Lienda, Miaoli 26063, Taiwan

DOI: https://doi.org/10.3390/cryst8110420
Journal volume & issue: Vol. 8, no. 11
p. 420

Abstract

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To realize high-efficiency AlGaN-based deep-ultraviolet light-emitting diodes (DUV-LEDs), enhancing their light-extraction efficiency (LEE) is crucial. This paper proposes an aluminum-based sidewall reflector structure that could replace the conventional ceramic-based packaging method. We design optimization simulations and experimental results demonstrated the light power output could be enhanced 18.38% of DUV-LEDs packaged with the aluminum-based sidewall.

Published in Crystals

ISSN: 2073-4352 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Crystallography
Website: http://www.mdpi.com/journal/crystals/

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