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21 March 2023 Advances in far-UVC LEDs and irradiation systems for medicine and sensing
Sven Einfeldt, Jan Ruschel, Hyun Kyong Cho, Jens Rass, Martin Guttmann, Thomas Filler, Marcel Schilling, Tim Kolbe, Arne Knauer, Sylvia Hagedorn, Luca Sulmoni, Heiko Gundlach, Christoph Stoelmacker, Steffen Knigge, Johannes Glaab, Tim Wernicke, Lucas Wittenbecher, Neysha Lobo Ploch, Markus Weyers, Olaf Krueger, Ulrike Woggon, Axel Kramer, Martina C. Meinke, Michael Kneissl
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Proceedings Volume PC12421, Gallium Nitride Materials and Devices XVIII; (2023) https://doi.org/10.1117/12.2648706
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
Recent advances in optimizing the efficiency and lifetime of far-UVC LEDs with emission wavelengths below 240 nm are presented. The design of the semiconductor heterostructure is considered as well as the chip layout. Cross-comparisons are used to draw general conclusions about degradation mechanisms in UV LEDs and to identify development strategies to minimize them. Furthermore, it is discussed which chip packaging is particularly suitable for a combination of far-UVC LEDs with spectral filters. Finally, far-UVC irradiation systems for skin-friendly irradiation of the human body are presented and their performance is illustrated with selected medical and biological data.
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© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Sven Einfeldt, Jan Ruschel, Hyun Kyong Cho, Jens Rass, Martin Guttmann, Thomas Filler, Marcel Schilling, Tim Kolbe, Arne Knauer, Sylvia Hagedorn, Luca Sulmoni, Heiko Gundlach, Christoph Stoelmacker, Steffen Knigge, Johannes Glaab, Tim Wernicke, Lucas Wittenbecher, Neysha Lobo Ploch, Markus Weyers, Olaf Krueger, Ulrike Woggon, Axel Kramer, Martina C. Meinke, and Michael Kneissl "Advances in far-UVC LEDs and irradiation systems for medicine and sensing", Proc. SPIE PC12421, Gallium Nitride Materials and Devices XVIII, (21 March 2023); https://doi.org/10.1117/12.2648706
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KEYWORDS
Light emitting diodes
Medicine
Sensing systems
Ultraviolet light emitting diodes
Oxides
Packaging
Pathogens
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