CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 11706 > Article
Presentation
5 March 2021 Progress on high-power UVC LEDs by increasing light-extraction efficiency
Hideki Hirayama, Yukio Kashima, Eriko Matsuura, Noritoshi Maeda, Masafumi Jo
Author Affiliations +
Proceedings Volume 11706, Light-Emitting Devices, Materials, and Applications XXV; 117060G (2021) https://doi.org/10.1117/12.2579593
Event: SPIE OPTO, 2021, Online Only
Abstract
We demonstrated an enhancement of light-extraction efficiency (LEE) in an AlGaN UVC light-emitting diode (LED) using photonic-crystal (PhC)-reflector fabricated on a p-GaN contact layer, which was introduced to realize both of low resistivity and high-reflectivity in p-contact layer. We fabricated an AlGaN UVC-LED with PhC-reflector on p-GaN contact layer, and confirmed that the external quantum efficiency (EQE) was increased by 1.7 times by introducing PhC-reflector. We also fabricated flip-chip UVC LED with PhC-reflector on p-contact layer and obtained more than 50 mW output power.
Conference Presentation
© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Hideki Hirayama, Yukio Kashima, Eriko Matsuura, Noritoshi Maeda, and Masafumi Jo "Progress on high-power UVC LEDs by increasing light-extraction efficiency", Proc. SPIE 11706, Light-Emitting Devices, Materials, and Applications XXV, 117060G (5 March 2021); https://doi.org/10.1117/12.2579593
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Reflectors
Light emitting diodes
Resistance
Absorption
External quantum efficiency
Photonic crystals
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top