AlGaN metasurface to increase the light-extraction efficiency of deep ultraviolet light-emitting diodes by perfect transmittance before critical angle

2020 ◽  
Author(s):  
Joosun Yun ◽  
Hideki Hirayama
Keyword(s):  
Ultraviolet Light ◽  
Critical Angle ◽  
Light Emitting Diodes ◽  
Extraction Efficiency ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Light Emitting ◽  
Deep Ultraviolet ◽  
Ultraviolet Light Emitting Diodes

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

Crystals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 420 ◽  
Author(s):  
Yung-Min Pai ◽  
Chih-Hao Lin ◽  
Chun-Fu Lee ◽  
Chun-Peng Lin ◽  
Cheng-Huan Chen ◽  
...  
Keyword(s):  
Ultraviolet Light ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Extraction Efficiency ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Light Power ◽  
Light Emitting ◽  
Deep Ultraviolet ◽  
Ultraviolet Light Emitting Diodes

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.

Sign in / Sign up

Export Citation Format

Share Document