Results 61 to 70 of about 1,353,383 (365)

Light Extraction Efficiency and Radiation Patterns of III-Nitride Light-Emitting Diodes With Colloidal Microlens Arrays With Various Aspect Ratios

open access: yesIEEE Photonics Journal, 2011
The fabrication studies of silica/polystyrene (PS) colloidal microlens arrays with various aspect ratios were performed on the III-nitride light-emitting diodes (LEDs).
Xiao-Hang Li   +5 more
doaj   +1 more source

Improving the External Quantum Efficiency of High-Power GaN-Based Flip-Chip LEDs by Using Sidewall Composite Reflective Micro Structure

open access: yesMicromachines, 2021
For high-power applications, it is important to improve the light extraction efficiency and light output of the vertical direction of LEDs. Flip-chip LEDs (FCLEDs) with an Ag/SiO2/distributed Bragg reflector/SiO2 composite reflection micro structure (CRS)
Liang Xu   +3 more
doaj   +1 more source

Numerical optimization of the extraction efficiency of a quantum-dot based single-photon emitter into a single-mode fiber

open access: yes, 2018
We present a numerical method for the accurate and efficient simulation of strongly localized light sources, such as quantum dots, embedded in dielectric micro-optical structures.
Burger, Sven   +5 more
core   +1 more source

Efficient single-photon source based on a deterministically fabricated single quantum dot - microstructure with backside gold mirror [PDF]

open access: yes, 2017
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett. 111, 011106 (2017) and may be found at https://doi.org/10.1063/1.4991389.We present
Fischbach, Sarah   +8 more
core   +1 more source

Optical light polarization and light extraction efficiency of AlGaN-based LEDs emitting between 264 and 220 nm

open access: yesJapanese Journal of Applied Physics, 2019
The influence of aluminum mole fraction of AlxGa1-xN/AlyGa1-yN multiple quantum wells (MQWs) on the optical polarization, light extraction efficiency (LEE) and external quantum efficiency (EQE) of deep ultra violet light emitting diodes in the wavelength
M. Guttmann   +7 more
semanticscholar   +1 more source

A Review on Micro-LED Display Integrating Metasurface Structures

open access: yesMicromachines, 2023
Micro-LED display technology has been considered a promising candidate for near-eye display applications owing to its superior performance, such as having high brightness, high resolution, and high contrast. However, the realization of polarized and high-
Zhaoyong Liu   +3 more
doaj   +1 more source

Fabrication technology for high light-extraction ultraviolet thin-film flip-chip (UV TFFC) LEDs grown on SiC

open access: yes, 2018
The light output of deep ultraviolet (UV-C) AlGaN light-emitting diodes (LEDs) is limited due to their poor light extraction efficiency (LEE). To improve the LEE of AlGaN LEDs, we developed a fabrication technology to process AlGaN LEDs grown on SiC into
Albadri, Abdulrahman   +9 more
core   +1 more source

Maximized performance of dye solar cells on plastic: a combined theoretical and experimental optimization approach [PDF]

open access: yes, 2016
We demonstrate that a combined optimization approach based on the sequential alternation of theoretical analysis and experimental realization gives rise to plastic supported dye solar cells for which both light harvesting efficiency and electron ...
Carretero-Palacios, S.   +7 more
core   +1 more source

Model for Light Extraction Efficiency of MicroLEDs

open access: yes, 2023
<p>For the first time, a semi-analytic formulation of the light extraction efficiency (LEE) of MicroLEDs is presented. The model is based on light tracing equations and delineates the contributions of reflection on the sidewalls of the MicroLEDs to enhance LEE compared to large LED.</p>
openaire   +1 more source

High-gravity-assisted scalable synthesis of zirconia nanodispersion for light emitting diodes encapsulation with enhanced light extraction efficiency

open access: yesChemical Engineering and Science, 2019
Zirconia-based hybrid polymers has become one of the ideal encapsulation material for light emitting diodes (LEDs) with high extraction efficiency due to their proper refractive index to those of semiconductor chips.
Xiang-lei He   +7 more
semanticscholar   +1 more source

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