Results 21 to 30 of about 8,247 (230)

DEEP ULTRAVIOLET LIGHT EMITTING DIODES (DUV LEDS)

open access: greenJournal of Engineering Science (Chişinău), 2018
There are a variety of applications for devices that extend into the deep-UV, including biological agent detection and optical storage. The nitride material system is a set of semiconducting compounds that have wavelengths that span a broad range, from yellow to deep-UV. AlGaN has a direct bandgap that extends into the deep-UV range; the device-quality
Titu-Marius I. Băjenescu
openalex   +4 more sources

Maximizing the Light Extraction Efficiency for AlGaN-Based DUV-LEDs with Two Optimally Designed Surface Structures under the Guidance of PSO [PDF]

open access: goldCrystals, 2022
A novel method of utilizing an intelligent algorithm to guide the light extraction surface structure designing process for deep-ultraviolet light emitting diodes (DUV-LEDs) is proposed and investigated.
Zizheng Li   +5 more
doaj   +2 more sources

Deep-ultraviolet Fourier ptychography (DUV-FP) for label-free biochemical imaging via feature-domain optimization [PDF]

open access: yesAPL Photonics
We 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

Introducing an n-type electron deceleration layer to enhance the luminous efficiency of AlGaN-based DUV-LEDs [PDF]

open access: goldFrontiers in Physics, 2023
The internal quantum efficiency (IQE) of conventional AlGaN-based deep-ultraviolet (DUV) light-emitting diodes (LEDs) is seriously limited by the poor and inhomogeneous carrier injection.
Qiao Wang   +7 more
doaj   +2 more sources

Theoretical and Computational Analysis of a Wurtzite-AlGaN DUV-LED to Mitigate Quantum-Confined Stark Effect with a Zincblende Comparison Considering Mg- and Be-Doping. [PDF]

open access: goldNanomaterials (Basel), 2022
Solís-Cisneros HI   +7 more
europepmc   +3 more sources

Enhancing the performance of AlGaN-based DUV-LEDs with multifocal laser stealth dicing

open access: goldOptics Express
In this study, AlGaN-based deep-ultraviolet light-emitting diodes (DUV-LEDs) processed via standard laser dicing (SLD) and multifocal laser stealth dicing (MFLSD) were investigated. Adopting the MFLSD technology would generate a roughing surface rather than the V-shaped grooves on the sidewall of 508 × 508 µm2 DUV-LEDs, which would reduce the forward ...
Meng-Chun Shen   +9 more
openalex   +3 more sources

Spherical vs. Plane Lenses for Enhanced DUV-LED Performance and Wine Aging [PDF]

open access: goldApplied Sciences
The strategic selection of lens geometry—spherical versus plane—decisively shapes the opto-thermal performance boundary of deep ultraviolet light-emitting diodes (DUV-LEDs), thereby governing their efficacy in application-specific photochemical processes.
Jichen Shen   +4 more
doaj   +2 more sources

High-Performances AlGaN-based DUV-LED via Under-Level Multiple Quantum Well Configuration [PDF]

open access: green
Low internal and external quantum efficiencies in high Aluminium content AlGaN-based deep-ultraviolet light-emitting diode (DUV-LED) occurred due to strong polarization effects, spontaneous and piezoelectric polarization, at the interface between two materials.
Mohammad Amirul Hairol Aman   +4 more
openalex   +3 more sources

Synthesis of a waterproof geopolymer adhesive applied in DUV LEDs packaging

open access: greenCeramics International, 2023
Qinglei Sun   +6 more
openalex   +3 more sources

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