Investigation of a new UVC LEDs array continuous type water disinfection system for inactivating Escherichia coli O157:H7 according to flow rate and electrical energy efficiency analysis
Sign Up to like & getrecommendations! Published in 2021 at "Food Control"
DOI: 10.1016/j.foodcont.2020.107470
Abstract: Abstract UVC LEDs are gaining popularity for its advantages which compensate for the limitations of low-pressure mercury UV lamps. In order to investigate the efficacy of UVC LEDs-based continuous water disinfection system, various numbers of… read more here.
Keywords: uvc leds; water; water disinfection; disinfection system ... See more keywords
The efficacy of UVC LEDs and low pressure mercury lamps for the reduction of Escherichia coli O157:H7 and Listeria monocytogenes on produce
Sign Up to like & getrecommendations! Published in 2020 at "Innovative Food Science and Emerging Technologies"
DOI: 10.1016/j.ifset.2020.102410
Abstract: Abstract The inactivation efficacies of low pressure mercury (LPM) lamps (253.7 nm) and UVC LEDs (277 nm) were compared for Escherichia coli O157:H7 on lettuce leaves and Listeria monocytogenes on apple skin. Reductions ranging from 1.19 ± 0.59 to… read more here.
Keywords: escherichia coli; coli o157; uvc leds; low pressure ... See more keywords
Degradation and failure mechanism of AlGaN-based UVC-LEDs
Sign Up to like & getrecommendations! Published in 2019 at "Solid-State Electronics"
DOI: 10.1016/j.sse.2019.01.004
Abstract: Abstract The degradation behaviors of flip-chip 260 nm ultraviolet light emitting diodes (UVC-LEDs) were studied using in-situ accelerated system and different analytical technologies. The optical power of LEDs stressed at a constant DC current of 20 mA… read more here.
Keywords: degradation failure; algan based; uvc leds;
Origin of the efficiency drop in far-UVC LEDs emitting between 218 and 238 nm
Sign Up to like & getrecommendations! Published in 2025 at "Applied Physics Letters"
DOI: 10.1063/5.0296414
Abstract: The rapid drop in the external quantum efficiency (EQE) of light emitting diodes (LEDs) in the far-ultraviolet-C (far-UVC) spectral range with emission wavelengths between 218 and 238 nm toward shorter wavelengths has been investigated. AlGaN far-UVC… read more here.
Keywords: origin efficiency; efficiency; drop; 218 238 ... See more keywords
Future Disinfection of Touch Screens by Far-UVC-LEDs?—A Feasibility Study
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Photonics Technology Letters"
DOI: 10.1109/lpt.2024.3422903
Abstract: Touch Screens are commonly contaminated with staphylococci and other pathogens and can therefore lead to the spread of infections both in the medical environment and in everyday life. Therefore, the feasibility study presented here aims… read more here.
Keywords: feasibility study; disinfection touch; uvc leds; far uvc ... See more keywords
Au-free V/Al/Pt Contacts on n-Al0.85Ga0.15N:Si Surfaces of Far-UVC LEDs
Sign Up to like & getrecommendations! Published in 2024 at "ECS Journal of Solid State Science and Technology"
DOI: 10.1149/2162-8777/ad78ff
Abstract: The feasibility of replacing the V/Al/Ni/Au contact on n-Al0.85Ga0.15N:Si commonly used in far-UVC LEDs with a Au-free V/Al/Pt contact has been investigated. It is shown that the V and Pt layer thicknesses play an important… read more here.
Keywords: al0 85ga0; 85ga0 15n; uvc leds; far uvc ... See more keywords
MOVPE-grown AlGaN-based tunnel heterojunctions enabling fully transparent UVC LEDs
Sign Up to like & getrecommendations! Published in 2019 at "Photonics Research"
DOI: 10.1364/prj.7.0000b7
Abstract: We report on AlGaN-based tunnel heterojunctions grown by metalorganic vapor phase epitaxy enabling fully transparent UVC LEDs by eliminating the absorbing p-AlGaN and p-GaN layers. Furthermore, the electrical characteristics can be improved by exploiting the… read more here.
Keywords: enabling fully; tunnel; algan based; uvc leds ... See more keywords
A Comprehensive Analysis of the UVC LEDs’ Applications and Decontamination Capability
Sign Up to like & getrecommendations! Published in 2022 at "Materials"
DOI: 10.3390/ma15082854
Abstract: The application of light-emitting diodes (LEDs) has been gaining popularity over the last decades. LEDs have advantages compared to traditional light sources in terms of lifecycle, robustness, compactness, flexibility, and the absence of non-hazardous material.… read more here.
Keywords: mercury vapor; uvc leds; comprehensive analysis; decontamination effectiveness ... See more keywords
Enhancement of Light Efficiency of Deep-Ultraviolet Light-Emitting Diodes by Encapsulation with a 3D Photonic Crystal Reflecting Layer
Sign Up to like & getrecommendations! Published in 2024 at "Nanomaterials"
DOI: 10.3390/nano14110983
Abstract: Recently, UVC LEDs, which emit deep ultraviolet light, have found extensive applications across various fields. This study demonstrates the design and implementation of thin films of three-dimensional photonic crystals (3D PhCs) as reflectors to enhance… read more here.
Keywords: efficiency; ultraviolet light; deep ultraviolet; uvc leds ... See more keywords