Results 41 to 50 of about 1,353,383 (365)
IEEE Photonics Journal, 2018 In this work, we investigate the effect of sidewall angle, height and space of an air cavity extractor (AC-Extractor) on the polarization-dependent light extraction efficiency (LEE) for AlGaN-based deep-ultraviolet light-emitting diodes (DUV LEDs) using ...
Yonghui Zhang +8 more
doaj +1 more source
Efficient metal halide perovskite light-emitting diodes with significantly improved light extraction on nanophotonic substrates. [PDF]
, 2019 Metal halide perovskite has emerged as a promising material for light-emitting diodes. In the past, the performance of devices has been improved mainly by optimizing the active and charge injection layers.
Fan, Zhiyong +11 more
core +3 more sources
IEEE Photonics Journal, 2017 An inclined sidewall scattering structure with air cavity characterized by a metal bottom and flat parallel top (Bottom_metal) is proposed to enhance the light extraction efficiency (LEE) for AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs).
Yonghui Zhang +6 more
doaj +1 more source
A solution processed flexible nanocomposite electrode with efficient light extraction for organic light emitting diodes. [PDF]
, 2014 Highly efficient organic light emitting diodes (OLEDs) based on multiple layers of vapor evaporated small molecules, indium tin oxide transparent electrode, and glass substrate have been extensively investigated and are being commercialized.
Chou, Shu-Yu +6 more
core +2 more sources
Results in Physics, 2018 In this work, the light extraction efficiency enhancement of GaN-based thin-film flip-chip (TFFC) light-emitting diodes (LEDs) with high-refractive-index (TiO2) buckling nanostructures was studied using the three-dimensional finite difference time domain
Qing-Yang Yue +3 more
doaj +1 more source
Research Progress of AlGaN-Based Deep Ultraviolet Light-Emitting Diodes
Micromachines, 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
Enhanced Light Extraction from Organic Light-Emitting Diodes with Micro-Nano Hybrid Structure
Nanomaterials, 2022 In this study, an external light extraction layer with a micro-nano hybrid structure was applied to improve the external light extraction efficiency of organic light-emitting diodes (OLEDs). A reactive ion-etching (RIE) process, using O2 and CHF3 plasma,
Eun-Jeong Bae +6 more
doaj +1 more source
Optimal overlayer inspired by Photuris firefly improves light-extraction efficiency of existing light-emitting diodes [PDF]
, 2013 In this paper the design, fabrication and characterization of a bioinspired overlayer deposited on a GaN LED is described. The purpose of this overlayer is to improve light extraction into air from the diode's high refractive-index active material.
Aimez, Vincent +6 more
core +2 more sources
Photonics, 2018 Recently developed graded photonic super-crystals show an enhanced light absorption and light extraction efficiency if they are integrated with a solar cell and an organic light emitting device, respectively.
Safaa Hassan +4 more
doaj +1 more source
Mechanism of enhanced light output in InGaN-based microlight emitting diodes [PDF]
, 2003 Micro-light emitting diode (LED) arrays with diameters of 4 to 20 mum have been fabricated and were found to be much more efficient light emitters compared to their broad-area counterparts, with up to five times enhancement in optical power densities ...
Choi, H. W. +5 more
core +1 more source