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5 March 2022 Study of AlxGa1-xN/AlN quantum dots in the whole compositional range as potential sources of far UVC for disinfection
Anjali Harikumar, Fabrice Donatini, Edith Bellet-Amalric, Catherine Bougerol, Christophe Dujardin, Stephen T. Purcell, Eva Monroy
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Proceedings Volume PC12001, Gallium Nitride Materials and Devices XVII; PC120010V (2022) https://doi.org/10.1117/12.2607614
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
Recently, there has been an increased interest in germicidal ultraviolet (GUV) lamps for disinfection. Despite extensive studies on GUV LEDs, their efficiency and cost per Watt is still far from that of mercury lamps due to electrical injection issues, among others. Also, the fact that 254 nm radiation is highly carcinogenic and cataractogenic, has motivated research on radiation with shorter penetration (200-230 nm) depth, for non-invasive disinfection. In this study, we propose electron pumped UV lamps as an alternative to LEDs (to tackle electrical issues) in the spectral range 230-330 targeting both wavelength ranges of disinfection and exhibiting IQE ranging from 20%-50%.
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Anjali Harikumar, Fabrice Donatini, Edith Bellet-Amalric, Catherine Bougerol, Christophe Dujardin, Stephen T. Purcell, and Eva Monroy "Study of AlxGa1-xN/AlN quantum dots in the whole compositional range as potential sources of far UVC for disinfection", Proc. SPIE PC12001, Gallium Nitride Materials and Devices XVII, PC120010V (5 March 2022); https://doi.org/10.1117/12.2607614
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KEYWORDS
Lamps
Quantum dots
Aluminum
Superlattices
Ultraviolet radiation
Mercury
Molecular beam epitaxy
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