UVC LED reliability and its effect on disinfection systems design

Nicola Trivellin; Francesco Piva; Matteo Buffolo; Carlo De Santi; Enrico Zanoni; Gaudenzio Meneghesso; Matteo Meneghini

doi:10.1117/12.2650396

14 March 2023 UVC LED reliability and its effect on disinfection systems design

Nicola Trivellin, Francesco Piva, Matteo Buffolo, Carlo De Santi, Enrico Zanoni, Gaudenzio Meneghesso, Matteo Meneghini

Proceedings Volume 12441, Light-Emitting Devices, Materials, and Applications XXVII; 1244103 (2023) https://doi.org/10.1117/12.2650396
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

UVC LED emitters have found important scope in the disinfection of bacteria and viruses. With this work we report on the reliability of commercial UVC LEDs with different wavelengths as a function of the driving current and the effect of lifetime on the system design. The reliability of commercial UVC LEDs by means of electrical, optical and spectral resolved measurements has been evaluated in our work. We then carried out stress tests at increasing driving current in order to define the acceleration effect of the current on the device reliability. By defining a current dependent degradation model, we identified the optimal operating condition to balance the number of disinfection cycles and their duration.

Conference Presentation

Citation Download Citation

Nicola Trivellin, Francesco Piva, Matteo Buffolo, Carlo De Santi, Enrico Zanoni, Gaudenzio Meneghesso, and Matteo Meneghini "UVC LED reliability and its effect on disinfection systems design", Proc. SPIE 12441, Light-Emitting Devices, Materials, and Applications XXVII, 1244103 (14 March 2023); https://doi.org/10.1117/12.2650396

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