Eu 2+/Eu 3+-doped oxyfluoride glass-ceramics for modular warm white emission
J Chen, Y Gao, J Li, Z He, D Zhou, J Qiu - Journal of Materials …, 2023 - pubs.rsc.org
White light-emitting diodes (WLEDs), which typically combine a yttrium aluminum garnet
doped with Ce3+ (YAG: Ce) with a blue LED, have been widely applied as illumination …
doped with Ce3+ (YAG: Ce) with a blue LED, have been widely applied as illumination …
Reliability of commercial UVC LEDs: 2022 state-of-the-art
With this study, we report on the reliability of the most recent commercial UVC LED devices.
The current COVID-19 pandemic urged the development of antiviral technologies, and one …
The current COVID-19 pandemic urged the development of antiviral technologies, and one …
Inactivating SARS-CoV-2 using 275 nm UV-C LEDs through a spherical irradiation box: Design, characterization and validation
We report on the design, characterization and validation of a spherical irradiation system for
inactivating SARS-CoV-2, based on UV-C 275 nm LEDs. The system is designed to …
inactivating SARS-CoV-2, based on UV-C 275 nm LEDs. The system is designed to …
[HTML][HTML] Degradation of AlGaN-based UV-C SQW LEDs analyzed by means of capacitance deep-level transient spectroscopy and numerical simulations
The lifetime of deep-ultraviolet light-emitting diodes (LEDs) is still limited by a number of
factors, which are mainly related to semiconductor defects, and still need to be clarified. This …
factors, which are mainly related to semiconductor defects, and still need to be clarified. This …
Degradation of InGaN-based LEDs: Demonstration of a recombination-dependent defect-generation process
N Renso, C De Santi, A Caria, F Dalla Torre… - Journal of Applied …, 2020 - pubs.aip.org
This paper provides insights into the degradation of InGaN-based LEDs by presenting a
comprehensive analysis carried out on devices having two quantum wells (QWs) with …
comprehensive analysis carried out on devices having two quantum wells (QWs) with …
Thermal spreading resistance characteristics of a high power light emitting diode module
In this study, effects of the dimensions and the thermal conductivity of the substrate on the
heat transfer characteristics of a LED module are investigated. The total thermal resistance …
heat transfer characteristics of a LED module are investigated. The total thermal resistance …
Performance and Degradation of Commercial Ultraviolet‐C Light‐Emitting Diodes for Disinfection Purposes
Herein, the reliability of commercial ultraviolet‐C (UV‐C) light‐emitting diodes (LEDs)
subjected to constant current stress is reported. Electrical, optical, and spectral analyses are …
subjected to constant current stress is reported. Electrical, optical, and spectral analyses are …
Degradation of microcellular PET reflective materials used in LED-based products
Microcellular PET is an emerging reflective material used for solid state lighting. This paper
experimentally investigated its degradation mechanisms and quantified both lumen decay …
experimentally investigated its degradation mechanisms and quantified both lumen decay …
[HTML][HTML] Degradation-induced low frequency noise and deep traps in GaN/InGaN near-UV LEDs
IH Lee, AY Polyakov, SM Hwang, NM Shmidt… - Applied Physics …, 2017 - pubs.aip.org
Electrical stressing of near-UV (peak wavelength 390–395 nm) multi-quantum-well
GaN/InGaN light emitting diodes at a high drive current of 650 mA and elevated temperature …
GaN/InGaN light emitting diodes at a high drive current of 650 mA and elevated temperature …
[HTML][HTML] Degradation and corresponding failure mechanism for GaN-based LEDs
J Fu, L Zhao, H Cao, X Sun, B Sun, J Wang, J Li - AIP Advances, 2016 - pubs.aip.org
The degradation behaviors of high power GaN-based vertical blue LEDs on Si substrates
were measured using in-situ accelerated life test. The results show that the dominant failure …
were measured using in-situ accelerated life test. The results show that the dominant failure …