Results 31 to 40 of about 295,332 (287)
Crystals, 2019 In this study, we present a novel type of package, freeform-designed chip scale package (FDCSP), which has ultra-high light extraction efficiency and bat-wing light field.
Che-Hsuan Huang +9 more
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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
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
Design rules for white light emitters with high light extraction efficiency
Optics Express, 2019 The finite-difference time-domain method is employed to study the light extraction efficiency of white light emitters. The cone arrays designed on top of white light emitters eliminate the dependency of light extraction on the wavelength and the cavity thickness and that leads to significant enhancement in light extraction efficiency for whole visible ...
Peifen Zhu +3 more
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Improving the Light Extraction Efficiency of GaN-Based Light-Emitting Diode
World Journal of Engineering and Technology, 2021 The light extraction efficiency caused by total internal reflection is low. Based on the analysis of the existing technology, a new design scheme is proposed in this paper to improve the light extraction efficiency. The air gap photonic crystal is embedded on the GaN-based patterned sapphire substrate, which can reduce line misalignment and improve ...
Lianjun Zhang, Zhongqi Fan, Gang Liu
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IEEE Photonics Journal, 2020 We conducted a systematic investigation of the light extraction efficiency (LEE) of GaN-based vertical micro-scale light-emitting diode (μ-LED) structures using three-dimensional finite-difference time-domain (FDTD) simulations. The LEE of μ
Han-Youl Ryu +2 more
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Photonics design theory enhancing light extraction efficiency in quantum dot light emitting diodes [PDF]
, 2022 The external quantum efficiency (EQE) of quantum dot light emitting diodes (QLEDs) needs improvement for more power-efficient devices. One of the main limitations is the low light extraction efficiency (LEE).
Hou, Bo +7 more
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Nanoparticle meta-grid for enhanced light extraction from light emitting devices [PDF]
, 2020 Based on a developed theory, we show that introducing a meta-grid of sub-wavelength-sized plasmonic nanoparticles (NPs) into existing semiconductor light-emitting-devices (LEDs) can lead to enhanced transmission of light across the LED-chip/encapsulant ...
Kornyshev, Alexei +2 more
core +1 more source
IEEE Photonics Journal, 2021 Herein, we investigate the influence of an AlGaN metasurface on AlGaN-based deep-ultraviolet light-emitting diodes' light-extraction efficiency by utilizing the 3D finite-difference time-domain method.
Joosun Yun, Hideki Hirayama
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Highly luminescent colloidal CdS quantum dots with efficient near-infrared electroluminescence in light-emitting diodes [PDF]
, 2016 We acknowledge financial support from FP7 project “Laser Induced Synthesis of Polymeric Nanocomposite Materials and Development of Micro-Patterned Hybrid Light Emitting Diodes (LED) and Transistors (LET)”-LAMP (Project G.A.247928). A.K.B.
Zhang, S. +19 more
core +1 more source