UVC LEDs: increase in optical performance through an optimized potting material

Indira Kaepplinger; Toni Schildhauer; Dennis Mitrenga; Guido Leibeling; Martin Schädel; Thomas Ortlepp

doi:10.1117/12.2609826

9 March 2022 UVC LEDs: increase in optical performance through an optimized potting material

Indira Kaepplinger, Toni Schildhauer, Dennis Mitrenga, Guido Leibeling, Martin Schädel, Thomas Ortlepp

Proceedings Volume PC12022, Light-Emitting Devices, Materials, and Applications XXVI; PC120220E (2022) https://doi.org/10.1117/12.2609826
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

Surface disinfection has taken on a new role in the context of the corona pandemic. UVC modules based on LED chips strive to replace mercury vapor lamps. However this will only be achieved if the necessary optical performance for disinfection can be guaranteed. We would like to present the development of potting materials for UVC LED chips. The aim was to find a potting material for use at a wavelength of 250 nm, which is sufficiently transparent, easy to process and which remains stable in its properties for many 100 hours at these wavelengths. Furthermore, the total reflection in the LED base body should be minimized by a refractive index of the cured material n >> 1.4. In addition to the aspects of material development, metrological requirements and long-term studies are also presented. We have succeeded in developing a potting technology that can greatly increase the performance of the UVC LEDs by up to 70%.

Conference Presentation

Citation Download Citation

Indira Kaepplinger, Toni Schildhauer, Dennis Mitrenga, Guido Leibeling, Martin Schädel, and Thomas Ortlepp "UVC LEDs: increase in optical performance through an optimized potting material", Proc. SPIE PC12022, Light-Emitting Devices, Materials, and Applications XXVI, PC120220E (9 March 2022); https://doi.org/10.1117/12.2609826

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