Rapid Inactivation of SARS-CoV-2 Variants by Continuous and Intermittent Irradiation with a Deep-Ultraviolet Light-Emitting Diode (DUV-LED) Device [PDF]
Pathogens, 2021 More than 1 year has passed since social activities have been restricted due to the spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
Hiroko Inagaki +5 more
doaj +3 more sources
A scattered volume emitter micropixel architecture for ultra efficient light extraction from DUV LEDs [PDF]
Scientific ReportsDeep ultraviolet light-emitting diodes (DUV LEDs) typically suffer from strong parasitic absorption in the p-epitaxial layer and rear metal contact/mirror.
Faris Azim Ahmad Fajri +4 more
doaj +5 more sources
Power Enhancement of 265 nm DUV-LED Flip-Chip by HVPE-AlN High-Temperature Annealing. [PDF]
Micromachines (Basel), 2023 In this paper, the X-ray diffraction full width at half the maximum (XRD FWHM) of a 3.5 µm-thick hydride vapor phase epitaxy-aluminum nitride (HVPE-AlN) (002) face after high-temperature annealing was reduced to 129 arcsec. The tensile strain in the HVPE-AlN samples gradually released with the increasing annealing temperature.
Yue W +7 more
europepmc +4 more sources
Influence of Thin Fluorine Resin Film on DUV LED Packaging Devices
Applied Sciences, 2023 Amorphous fluorine resin is a promising material that can be used for the encapsulation of deep-ultraviolet light-emitting diodes (DUV LEDs) to promote the light output, due to its light characteristics which mean it shows no absorption in the DUV ...
Wenbo Li +7 more
doaj +2 more sources
Deep-ultraviolet Fourier ptychography (DUV-FP) for label-free biochemical imaging via feature-domain optimization [PDF]
APL PhotonicsWe present deep-ultraviolet Fourier ptychography (DUV-FP) for high-resolution chemical imaging of biological specimens in their native state without exogenous stains.
Qianhao Zhao +5 more
doaj +2 more sources
Realization of Electrically Driven AlGaN-Delta-GaN QW DUV Micro-LEDs at 265 nm
IEEE Photonics JournalQuantum efficiency of deep-ultraviolet (DUV) light-emitting diodes (LEDs) is a roadblock for these devices to reach efficiencies comparable to their visible light counterparts.
Bryan Melanson +3 more
doaj +2 more sources
DUV LEDs based on AlGaN quantum dots [PDF]
Gallium Nitride Materials and Devices XVI, 2021 Deep ultraviolet (DUV) light emitting diodes (LED) are expected to be the next generation of UV sources, offering significant advantages such as compactness, low consumption and long lifetimes. Yet, improvements of their performances are still required and the potential of AlyGa1-yN quantum dots as DUV emitters is investigated in this study.
Julien Brault +12 more
openaire +1 more source
Greatly Enhanced Wall-Plug Efficiency of N-polar AlGaN-Based Deep Ultraviolet Light-Emitting Diodes
IEEE Photonics Journal, 2021 In this work, we numerically investigate the N-polar AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs) over the Ga-polar DUV LEDs. The light output power has increased from 7.1 mW of Ga-polar DUV LED to 18.8 mW of N-polar DUV LED at 60 mA ...
Hongchang Tao +4 more
doaj +1 more source
Deep Ultraviolet Light-Emitting Diode Light Therapy for Fusobacterium nucleatum
Microorganisms, 2021 Background: Fusobacterium nucleatum, which is associated with periodontitis and gingivitis, has been detected in colorectal cancer (CRC). Methods: We evaluated the bactericidal effect of deep ultraviolet (DUV) light-emitting diode (LED) light therapy on ...
Soichiro Fukuda +12 more
doaj +1 more source
AlGaN-Delta-GaN Quantum Well for DUV LEDs [PDF]
Photonics, 2020 AlGaN-delta-GaN quantum well (QW) structures have been demonstrated to be good candidates for the realization of high-efficiency deep-ultraviolet (DUV) light-emitting diodes (LEDs). However, such heterostructures are still not fully understood. This study focuses on investigation of the optical properties and efficiency of the AlGaN-delta-GaN QW ...
Cheng Liu, Bryan Melanson, Jing Zhang
openaire +2 more sources