Planar Compound Eye Lens for Enhanced Light Extraction Efficiency in AlGaN‐Based Deep Ultraviolet LEDs

Qilong Tan; Jie Zhao; Qixin Li; Huan Liu; Bin Dong; Chenguang He; Zhitao Chen; Wen Zhou; Ningyang Liu

doi:10.1002/adpr.202300309

Advanced Photonics Research (Mar 2024)

Planar Compound Eye Lens for Enhanced Light Extraction Efficiency in AlGaN‐Based Deep Ultraviolet LEDs

Qilong Tan,
Jie Zhao,
Qixin Li,
Huan Liu,
Bin Dong,
Chenguang He,
Zhitao Chen,
Wen Zhou,
Ningyang Liu

Affiliations

Qilong Tan: Institute of Semiconductors Guangdong Academy of Sciences Guangzhou 510075 China
Jie Zhao: Institute of Semiconductors Guangdong Academy of Sciences Guangzhou 510075 China
Qixin Li: Institute of Semiconductors Guangdong Academy of Sciences Guangzhou 510075 China
Huan Liu: Institute of Semiconductors Guangdong Academy of Sciences Guangzhou 510075 China
Bin Dong: Institute of Semiconductors Guangdong Academy of Sciences Guangzhou 510075 China
Chenguang He: Institute of Semiconductors Guangdong Academy of Sciences Guangzhou 510075 China
Zhitao Chen: Institute of Semiconductors Guangdong Academy of Sciences Guangzhou 510075 China
Wen Zhou: Center for Alloy Innovation and Design (CAID), State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 China
Ningyang Liu: Institute of Semiconductors Guangdong Academy of Sciences Guangzhou 510075 China

DOI: https://doi.org/10.1002/adpr.202300309
Journal volume & issue: Vol. 5, no. 3
pp. n/a – n/a

Abstract

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Total internal reflection prevents photons from escaping deep‐ultraviolet (DUV) LED, resulting in serious energy waste and reduced service life. To lift the limitation of extraction ability of AlGaN‐based DUV LEDs, an inspiration was drawn from biological visual systems with wide field, which have obtained highly optimized features through evolution. By reconfiguring planar compound eye lens (PCEL) on the n‐AlGaN surface utilizing bio‐inspired features acquired from praying mantis, light extraction efficiency (LEE) enhancement over 180% is demonstrated both for transverse electric (TE) and magnetic fields by finite difference‐time domain (FDTD) simulation. Owing to its ultrathin planar structure and compatibility of material, PCEL provides a pathway to improve energy utilization efficiency of DUV‐LED utilizing one‐step nanoimprint.

Published in Advanced Photonics Research

ISSN: 2699-9293 (Online)
Publisher: Wiley-VCH
Country of publisher: Germany
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: https://onlinelibrary.wiley.com/journal/26999293

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