Emerging applications of deep ultraviolet light emitting diodes

Michael Shur

doi:10.1117/12.2592244

1 August 2021 Emerging applications of deep ultraviolet light emitting diodes

Michael Shur

Proceedings Volume 11801, UV and Higher Energy Photonics: From Materials to Applications 2021; 1180105 (2021) https://doi.org/10.1117/12.2592244
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Abstract

UV radiation is highly effective in killing against viruses, bacteria, algae, molds, and yeasts. They are compact, have rapid turn-off and turn-on times, and provide UV radiation at different wavelengths allowing to target specific contaminants. The deep UV LEDs (UVC LEDs) do not contain hazardous substances, such as mercury. Since their operating voltage is low they could be powered by photovoltaic cells. Recent studies have shown that UV radiation at 222 nm is effective in killing viruses but safer for humans compared to 265 nm to 280 nm radiation. Another advantage of UVC LEDs is an ability of rapidly adjust the output power of UVC LED lamps that allows to use the feedback and Artificial Intelligence models to optimize the effects of the UV radiation, save power, and ensure safety. One example, where this is important, is the application of deep UVC LED systems with feedback in vaccine production. A more traditional application of UV LEDs is in water purification being enabled by the recent improvements in deep UV LED power, reliability, packaging, and lifetime. These improvements allow for scaling up the emerging deep UV LED applications and make it feasible to use deep UV LEDs for improving plant yield, extending produce storage time, disinfecting grain and chicken feed, and fighting Hospital Acquired Infections.

Conference Presentation

Citation Download Citation

Michael Shur "Emerging applications of deep ultraviolet light emitting diodes", Proc. SPIE 11801, UV and Higher Energy Photonics: From Materials to Applications 2021, 1180105 (1 August 2021); https://doi.org/10.1117/12.2592244

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