Exploring the efficiency limits of AlGaN multi-quantum well deep UV-LEDs

Michael Kneissl; Giulia Cardinali; Martin Guttmann; Anton Muhin; Marcel Schilling; Luca Sulmoni; Tim Wernicke; Hyun Kyong Cho; Johannes Glaab; Arne Knauer; Tim Kolbe; Jan Ruschel; Sylvia Hagedorn; Neysha Lobo-Ploch; Carsten Netzel; Jens Rass; Sven Einfeldt; Markus Weyers

doi:10.1117/12.2651983

21 March 2023 Exploring the efficiency limits of AlGaN multi-quantum well deep UV-LEDs

Michael Kneissl, Giulia Cardinali, Martin Guttmann, Anton Muhin, Marcel Schilling, Luca Sulmoni, Tim Wernicke, Hyun Kyong Cho, Johannes Glaab, Arne Knauer, Tim Kolbe, Jan Ruschel, Sylvia Hagedorn, Neysha Lobo-Ploch, Carsten Netzel, Jens Rass, Sven Einfeldt, Markus Weyers

Author Affiliations +

Proceedings Volume PC12421, Gallium Nitride Materials and Devices XVIII; (2023) https://doi.org/10.1117/12.2651983
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Light emitting diodes in the deep ultraviolet spectral range (DUV-LEDs) are of great interest for monitoring gases, pollutants in water as well as the in-vivo inactivation of multi-drug-resistant bacteria. This paper reviews advances in development of AlGaN-based DUV-LEDs, including the realization of low defect density AlN on sapphire. DUV-LEDs near 230 nm with output powers of more than 3 mW will be demonstrated and the root causes for the efficiency drop at shorter UV wavelength will be explored, including changes in the polarization of light emission, the role of point defects as well as carrier injection in AlGaN MQWs.

Conference Presentation

Citation Download Citation

Michael Kneissl, Giulia Cardinali, Martin Guttmann, Anton Muhin, Marcel Schilling, Luca Sulmoni, Tim Wernicke, Hyun Kyong Cho, Johannes Glaab, Arne Knauer, Tim Kolbe, Jan Ruschel, Sylvia Hagedorn, Neysha Lobo-Ploch, Carsten Netzel, Jens Rass, Sven Einfeldt, and Markus Weyers "Exploring the efficiency limits of AlGaN multi-quantum well deep UV-LEDs", Proc. SPIE PC12421, Gallium Nitride Materials and Devices XVIII, (21 March 2023); https://doi.org/10.1117/12.2651983

ACCESS THE FULL ARTICLE

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

KEYWORDS

Light emitting diodes

External quantum efficiency

Aluminum nitride

Deep ultraviolet

Sapphire

Skin

Polarization

Show All Keywords

Keywords/Phrases

Search In:

Publication Years