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9 March 2022 Development of far-UVC LEDs and their application in irradiation systems for antisepsis and sensing
Neysha Lobo Ploch, Hyun Kyong Cho, Thomas Filler, Johannes Glaab, Heiko Gundlach, Martin Guttmann, Sylvia Hagedorn, Frank Mehnke, Jens Rass, Jan Ruschel, Marcel Schilling, Luca Sulmoni, Tim Wernicke, Lucas Wittenbecher, Ulrike Woggon, Axel Kramer, Martina C. Meinke, Michael Kneissl, Markus Weyers, Ulrike Winterwerber, Sven Einfeldt
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Proceedings Volume PC12022, Light-Emitting Devices, Materials, and Applications XXVI; PC120220D (2022) https://doi.org/10.1117/12.2607275
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
Far-UVC LEDs are interesting for applications such as skin-tolerant inactivation of multiresistant pathogens and gas sensing. We present the development of 233 nm AlGaN-based far-UVC LEDs with an emission power of 3 mW at 200 mA and L50 lifetime of more than 1000 h, after burn-in. Additionally, the design of a far-UVC LED-based irradiation system, with a spectral filter which supresses emission >240 nm, to study the inactivation of bacteria and skin compatibility of the radiation will be presented. The system can be used to homogeneously irradiate a target area of 70 mm diameter with a mean irradiance of 0.4 mW/cm².
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Neysha Lobo Ploch, Hyun Kyong Cho, Thomas Filler, Johannes Glaab, Heiko Gundlach, Martin Guttmann, Sylvia Hagedorn, Frank Mehnke, Jens Rass, Jan Ruschel, Marcel Schilling, Luca Sulmoni, Tim Wernicke, Lucas Wittenbecher, Ulrike Woggon, Axel Kramer, Martina C. Meinke, Michael Kneissl, Markus Weyers, Ulrike Winterwerber, and Sven Einfeldt "Development of far-UVC LEDs and their application in irradiation systems for antisepsis and sensing", Proc. SPIE PC12022, Light-Emitting Devices, Materials, and Applications XXVI, PC120220D (9 March 2022); https://doi.org/10.1117/12.2607275
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KEYWORDS
Light emitting diodes
Sensing systems
Skin
Metals
Pathogens
Gases
Optical filters
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