Link between defects, quantum efficiency and degradation trends in UV-C LEDs

M. Meneghini1,2, F. Piva1, N. Roccato1, J. Pacuk1, M. Pilati1, S. Longato1, C. De Santi1, M. Buffolo1,2, N. Susilo3, M. Schilling3, D. Hauer Vidal3, A. Muhin3, L. Sulmoni3, J. Höpfner3, J. Ruschel4, J. Glaab4, J. Rass4, S. Einfeldt4, T. Wernicke3, M. Kneissl3,4, N. Trivellin1,5, G. Meneghesso1, E. Zanoni1

Published in:

Proc. of SPIE, vol. 13913, Light-Emitting Devices, Materials, and Applications XXX, Photonics West, San Francisco, USA, Jan 17-22, 1391307 (2026).

1 Dipartimento di Ingegneria dell’Informazione, Università di Padova, via Gradenigo 6/B, Padova 35131, Italy
2 Dipartimento di Fisica e Astronomia, Università di Padova, via Marzolo 8, Padova 35131, Italy
3 Technische Universität Berlin, Institute for Physics and Astronomy, Hardenbergstr. 36, 10623 Berlin, Germany
4 Ferdinand-Braun-Institut (FBH), Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany
5 Dipartimento di Ingegneria Industriale, Università di Padova, via Gradenigo 6/A, Padova 35131, Italy

(2026) Published by SPIE. Downloading of the abstract is permitted for personal use only.
© (2026) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the SPIE.

Full version in pdf-format.