Results 271 to 280 of about 849,538 (300)

Asymmetric microstructures for high light extraction and light pattern modulation

2013 International Conference on Optical MEMS and Nanophotonics (OMN), 2013
This work presents a novel method of fabricating asymmetric microstructures for light extraction enhancement and light pattern modulation. Asymmetric microstructures were fabricated at wafer level by two-step photolithography, surface energy modulation, and thermal reflow.
Jae-Jun Kim, Dongmin Keum, Ki-Hun Jeong
openaire   +1 more source

Nanotexturing in Ultraviolet Light-Emitting Diodes for Enhanced Light Extraction

Integrated Photonics Research and Applications/Nanophotonics, 2006
We discuss the use of nanotextured surfaces to increase the light extraction efficiency of ultraviolet light emitting diodes (UV-LEDs). Design approaches, fabrication processes and challenges, and initial experimental results are discussed.
Thomas J. Suleski, Yi-Chen Chuang, D. Jeremy Spivey, Paolo Batoni, Edward B. Stokes   +4 more
openaire   +1 more source

Cavity effects on light extraction in organic light emitting devices

Applied Physics Letters, 2008
We have demonstrated that the light extraction efficiency of an organic light emitting device is a strong function of device geometry. Specifically, we have found that the ratio of the extracted mode to the substrate-guided mode varies from 22% to 55% depending on the location of the recombination zone.
Jaewon Lee, Neetu Chopra, Franky So
openaire   +1 more source

Light extraction in organic light-emitting diodes

2011
Organische Leuchtdioden (OLEDs) sind dünne, großflächige Lichtquellen, die ein angenehmes diffuses Licht abstrahlen. OLEDs bestehen aus mehreren organischen Schichten eingebettet zwischen zwei Elektroden. Die aktiven Schichten einer typischen OLED haben eine Dicke von lediglich einigen hundert Nanometern.
openaire   +1 more source

Light extraction by Lambertian sources from light emitting diodes

SPIE Proceedings, 2013
Internal back-and-forth propagation of photons within a light emitting diode (LED) will naturally tend towards a Lambertian intensity profile when surface texturing is sufficiently rough. Novel designs in light extraction efficiency (LEE) can therefore benefit by optimizing under this expectation.
openaire   +1 more source

[Progress of light extraction enhancement in organic light-emitting devices].

Guang pu xue yu guang pu fen xi = Guang pu, 2015
Organic light emitting devices (OLEDs) have been used in flat-panel displays and lighting with a near-30-year development. OLEDs possess many advantages, such as full solid device, fast response, flexible display, and so on. As the application of phosphorescence material, the internal quantum efficiency of OLED has almost reached 100%, but its external
Mo, Liu, Tong, Li, Yan, Wang, Tian-Yu, Zhang, Wen-Fa, Xie   +4 more
openaire   +1 more source

Organic Light-Emitting Diodes/Light Extraction

2018
openaire   +1 more source

Role of surface microstructure and shape on light extraction efficiency enhancement of GaN micro-LEDs: A numerical simulation study

Displays, 2022
Qun Yan
exaly  

Competing light extraction strategies in perovskite light-emitting diodes

Nature Nanotechnology
Guanding Mei, Kai Wang, Xiao Wei Sun
openaire   +2 more sources

Broadband Light Extraction from White Organic Light‐Emitting Devices by Employing Corrugated Metallic Electrodes with Dual Periodicity

Advanced Materials, 2013
Yan-Gang Bi, Jing Feng, Xian-Bin Li
exaly