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High-speed solar-blind optical wireless communication enabled by DUV LED
Light-Emitting Devices, Materials, and Applications XXVI, 2022Shigefusa Chichibu, Kazunobu Kojima
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Collection and Inactivation Abilities of Virus Flowing in a Return Air Channel with a DUV- LED
The Proceedings of Mechanical Engineering Congress Japan, 2022Kotaro Takamure, Yasumasa Iwatani
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Geopolymer adhesives for DUV LED packaging: Synthesis and bonding mechanism
Journal of Alloys and CompoundsHongyong Jiang +2 more
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2013 Conference on Lasers and Electro-Optics Pacific Rim (CLEOPR), 2013
We report on development for commercial production of 50mW class AlGaN based deep ultraviolet light-emitting diodes (DUVLED) with wave length ranging 255 to 355 nm. DUVLED have about 10% EQE and over 10000 hours life time.
Masamichi Ippommatsu +3 more
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We report on development for commercial production of 50mW class AlGaN based deep ultraviolet light-emitting diodes (DUVLED) with wave length ranging 255 to 355 nm. DUVLED have about 10% EQE and over 10000 hours life time.
Masamichi Ippommatsu +3 more
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Light extraction analysis of AlGaN nanowires with inverse taper for DUV LEDs
Light-Emitting Devices, Materials, and Applications XXV, 2021Planar deep-ultraviolet (DUV) light emitting diodes (LEDs) suffer from extremely low external quantum efficiencies (EQEs) due to poor light extraction efficiencies (LEE) which are often less than 1%, hindering their widespread use. In AlGaN DUV LEDs with high Al-content, the positioning of the valence subbands leads to dominant transverse magnetic (TM)-
Bryan Melanson +3 more
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IQE and EQE of the nitride-based UV/DUV LEDs
CLEO:2011 - Laser Applications to Photonic Applications, 2011Internal and external quantum efficiency and injection efficiency of nitride-based UV/DUV devices were investigated. Non radiative component in the photoluminescence and electroluminescence is found to be strongly correlated with the dislocation density.
H. Amano +12 more
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Hermetic SMD-type reflector cavity packaging for DUV LEDs
Light-Emitting Devices, Materials, and Applications XXIV, 2020Packaging materials usable for DUV-LEDs are limited as most organic materials are affected by DUV radiation. Packages used are TO-packages or 3D-structured ceramic housings with quartz lid. Due to DUV-LEDs radiating up to 50% of their light to the sides a significant share is lost.
Ulli Hansen +5 more
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Thermal Management for DUV LEDs
2019DUV LEDs possess very huge heating issue. On one hand, the sapphire substrate has a poor thermal conductivity, and on the other hand, DUV photons are easily absorbed by the absorptive p-GaN layer and the metal contact in the way of free carrier absorption, which further increases the self-heating effect for DUV LEDs.
Zi-Hui Zhang +3 more
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The Light Extraction Efficiency for DUV LEDs
2019DUV LEDs have very low light extraction efficiency (LEE), which is caused by the unique optical polarization and the optically absorptive semiconductor and metal layers. This chapter reviews and analyzes the approaches that have ever been used to improve the LEE.
Zi-Hui Zhang +3 more
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On the impact of a metal–insulator–semiconductor structured n-electrode for AlGaN-based DUV LEDs
Applied Optics, 2021In this work, a 280 nm AlGaN-based deep ultraviolet light-emitting diode (DUV LED) with a metal–insulator–semiconductor (MIS) structured n-electrode is fabricated and studied. The S i O 2 insulator layer is adopted to form the MIS structure by using an atomic layer deposition system.
Hua Shao +6 more
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