Simultaneous influence of nanoPSS and photonic crystal on light extraction in AlGaN 304nm UVB LEDs

Simultaneous influence of nanoPSS and photonic crystal on light extraction in AlGaN 304nm UVB LEDs

Abstract The external-quantum efficiency (EQE) of AlGaN-based ultraviolet-B light-emitting diodes (UVB LEDs) has achieved a world record value of 9.6% on wafers but suffers from a low light extraction efficiency (LEE) of < 15%, notably lower than that of the LEE of InGaN blue LEDs (> 89%). Thi...

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Bibliographic Details
Main Authors: M. Ajmal Khan, Eriko Matsuura, Yukio Kashima, Hideki Hirayama
Format: Article
Language:English
Published: Nature Portfolio 2025-06-01
Series:Scientific Reports
Subjects:
Ultraviolet-B light-emitting diode (UVB LED)
AlGaN
Light extraction efficiency (LEE)
Finite-difference time-domain method (FDTD)
Bragg’s condition; plane-wave-expansion (PWE) method
Photonic band gap (PBG)
Online Access:https://doi.org/10.1038/s41598-025-03746-6
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https://doi.org/10.1038/s41598-025-03746-6

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