Results 21 to 30 of about 4,806,914 (197)

A 265-Nanometer High-Power Deep-UV Light-Emitting Diode Rapidly Inactivates SARS-CoV-2 Aerosols

open access: yesmSphere, 2022
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection (COVID-19) is an acute respiratory infection transmitted by droplets, aerosols, and contact.
Hiroshi Ueki   +5 more
doaj   +1 more source

A scattered volume emitter micropixel architecture for ultra efficient light extraction from DUV LEDs [PDF]

open access: yesScientific Reports
Deep 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   +2 more sources

High Efficiency Deep Ultraviolet Light-Emitting Diodes With Polarity Inversion of Hole Injection Layer

open access: yesIEEE Photonics Journal, 2023
In this work, we investigate the performance improvement of N-polar AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs) by the inversion of the hole injection layer from N-polar to Ga-polar.
Xu Liu   +7 more
doaj   +1 more source

Recent advances in polymeric chemically amplified positive resists: Materials and design strategies. [PDF]

open access: yesSmart Mol
This review summarizes recent advances in the molecular design of positive chemically amplified resists, focusing on photoacid generators and polymer architectures. Key strategies for enhancing sensitivity—including self‐amplification effects, copolymerization of sensitive monomers, controlled polymerization, and photosensitized chemically amplified ...
Zhou L, Li H, Zhang J, Xin H.
europepmc   +2 more sources

Untersuchung der Duv-Präferenz in Abhängigkeit von korrelierter Farbtemperatur (CCT), Farbgamut und betrachteten Objekten [PDF]

open access: yes, 2023
Der Weißpunkt einer im Innenraum verwendeten LED-Lichtquelle hat einen entscheidenden Einfluss darauf, ob Menschen die Beleuchtung akzeptieren oder nicht.
Klabes, Julian   +3 more
core   +1 more source

Quantitative evaluation of SARS-CoV-2 inactivation using a deep ultraviolet light-emitting diode

open access: yesScientific Reports, 2021
Inactivation technology for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is certainly a critical measure to mitigate the spread of coronavirus disease 2019 (COVID-19). A deep ultraviolet light-emitting diode (DUV-LED) would be a promising
Takeo Minamikawa   +10 more
doaj   +1 more source

Research Progress of AlGaN-Based Deep Ultraviolet Light-Emitting Diodes

open access: yesMicromachines, 2023
AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs) have great application prospects in sterilization, UV phototherapy, biological monitoring and other aspects.
Ruiqiang Xu   +4 more
doaj   +1 more source

Improvement of Light Extraction in Deep Ultraviolet GaN Light Emitting Diodes with Mesh P-Contacts

open access: yesApplied Sciences, 2020
One of the main reasons that the emission efficiency of GaN-based light-emitting diodes (LEDs) decreases significantly as the emission wavelength shorter than 300 nm is the low light extraction efficiency (LEE). Especially in deep ultra-violet (DUV) LEDs,
Shiou-Yi Kuo   +3 more
doaj   +1 more source

High photoluminescence intensity of heterostructure AlGaN-based DUV-LED through uniform carrier distribution

open access: yes, 2023
We report a numerical analysis of the variation of Aluminium (Al) composition in Al Gallium Nitride (AlGaN)-based Deep-Ultraviolet Light-Emitting Diode (DUV-LED) and its effects on the carrier concentration, radiative recombination, and photoluminescence
Hairol Aman, Mohammad Amirul   +5 more
core   +1 more source

Rapid inactivation of human respiratory RNA viruses by deep ultraviolet irradiation from light-emitting diodes on a high-temperature-annealed AlN/Sapphire template

open access: yesOpto-Electronic Advances, 2023
Efficient and eco-friendly disinfection of air-borne human respiratory RNA viruses is pursued in both public environment and portable usage. The AlGaN-based deep ultraviolet (DUV) light-emission diode (LED) has high practical potentials because of its ...
Ke Jiang   +10 more
doaj   +1 more source

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