Factors influencing the emission characteristics of UV LED chips: The modular system for module optimization

Indira Kaepplinger; Dennis Mitrenga; Guido Leibeling; Frank Gindele; Yoshio Kikuchi; Olaf Brodersen; Thomas Ortlepp

doi:10.1117/12.2575072

5 March 2021 Factors influencing the emission characteristics of UV LED chips: The modular system for module optimization

Indira Kaepplinger, Dennis Mitrenga, Guido Leibeling, Frank Gindele, Yoshio Kikuchi, Olaf Brodersen, Thomas Ortlepp

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Proceedings Volume 11706, Light-Emitting Devices, Materials, and Applications XXV; 117060J (2021) https://doi.org/10.1117/12.2575072
Event: SPIE OPTO, 2021, Online Only

Abstract

Deep ultraviolet (UV) light emitting diodes (LEDs) have a wide range of applications such as water treatment, medical diagnostics, sterilization of medical devices and gas measurement. Depending on the desired application, the emission characteristics of UV light must be optimized. In addition to improving the external quantum efficiency, the radiation properties of the UV LED chip can be influenced and supported by the performance of the housing and the assembly technology. We will present some results on how to improve the optical performance of UV LED chips through optically UV-transparent materials, which are complemented by some basic aging studies. Furthermore, the influence of differently shaped lenses in combination with and without an integrated aluminum reflector is presented. We want to show the influence of the different optical and thermal elements individually and in combination to show the possibilities to design the optimal radiator module with the desired properties.

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Citation Download Citation

Indira Kaepplinger, Dennis Mitrenga, Guido Leibeling, Frank Gindele, Yoshio Kikuchi, Olaf Brodersen, and Thomas Ortlepp "Factors influencing the emission characteristics of UV LED chips: The modular system for module optimization", Proc. SPIE 11706, Light-Emitting Devices, Materials, and Applications XXV, 117060J (5 March 2021); https://doi.org/10.1117/12.2575072

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KEYWORDS

Ultraviolet light emitting diodes

Light emitting diodes

Ultraviolet radiation

Optical components

Thermography

UV optics

Deep ultraviolet

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