Results 51 to 60 of about 5,099,955 (171)

Thin-film photonic crystal LEDs with enhanced directionality [PDF]

, 2009
The use of photonic crystals for light extraction from light-emitting diodes (LEDs) gives the possibility to shape the farfield emission pattern. This is of particular interest for étendue-limited LED applications that require a more directional ...
Bergenek, Krister, N. Linder, K. Bergenek, R. Wirth, K. Streubel, Ch. Wiesmann, H. Zull, T. F. Krauss, C. Rumbolz   +8 more
core   +1 more source

Inverted device architecture for high efficiency single-layer organic light-emitting diodes with imbalanced charge transport

Nature Communications
Many wide-gap organic semiconductors exhibit imbalanced electron and hole transport, therefore efficient organic light-emitting diodes require a multilayer architecture of electron- and hole-transport materials to confine charge recombination to the ...
Xiao Tan, Dehai Dou, Lay-Lay Chua, Rui-Qi Png, Daniel G. Congrave, Hugo Bronstein, Martin Baumgarten, Yungui Li, Paul W. M. Blom, Gert-Jan A. H. Wetzelaer   +9 more
doaj   +1 more source

Higher order effects in organic LEDs with sub-bandgap turn-on

Nature Communications, 2019
Conflicting mechanisms have been proposed to explain the sub-bandgap turn-on behaviour of heterojunction organic light-emitting diodes (OLEDs). Here, by probing and modifying the OLED heterojunction, the authors show that band-to-band recombination is ...
Sebastian Engmann, Adam J. Barito, Emily G. Bittle, Noel C. Giebink, Lee J. Richter, David J. Gundlach   +5 more
doaj   +1 more source

A review on organic spintronic materials and devices: II. Magnetoresistance in organic spin valves and spin organic light emitting diodes

Journal of Science: Advanced Materials and Devices, 2016
In the preceding review paper, Paper I [Journal of Science: Advanced Materials and Devices 1 (2016) 128–140], we showed the major experimental and theoretical studies on the first organic spintronic subject, namely organic magnetoresistance (OMAR) in ...
Rugang Geng, Hoang Mai Luong, Timothy Tyler Daugherty, Lawrence Hornak, Tho Duc Nguyen   +4 more
doaj   +1 more source

Exciplex hosts for blue phosphorescent organic light-emitting diodes

Journal of Information Display, 2020
The host material of organic light-emitting diodes (OLEDs) has been advanced from a single host to a mixed host for high efficiency and long lifetime.
Mina Jung, Jun Yeob Lee
doaj   +1 more source

Wavelength-Multiplexed Polymer LEDs: Towards 55 Mb/s Organic Visible Light Communications [PDF]

, 2015
We present recent progress on visible light communication systems using polymer light-emitting diodes as the transmitters and a commercial silicon photodetector as the receiver.
Papakonstantinou, I, Bausi, Francesco, Haigh, PA, Cacialli, Franco, Haigh, Paul Anthony, Le Minh, H, Burton, A, Cacialli, F, Popoola, Wasiu Oyewole, Bausi, F, Papakonstantinou, Ioannis, Popoola, Wasiu O., Burton, Andrew, Haigh, Paul, Le Minh, Hoa, Popoola, WO   +15 more
core   +1 more source

Synthesis of reactive 1,3-diphenyl-6-aryl-substituted fulvene chromophores

Data in Brief, 2018
This data article describes a detailed synthetic strategy and experimental data for the synthesis of brominated fulvene chromophores as reactive precursors/monomers for conjugated organic materials.
Stephen M. Budy, David Y. Son, Gary J. Balaich, Scott T. Iacono   +3 more
doaj   +1 more source

Recent Advances of Exciplex-Based White Organic Light-Emitting Diodes

Applied Sciences, 2018
Recently, exciplexes have been actively investigated in white organic light-emitting diodes (WOLEDs), since they can be effectively functioned as (i) fluorescent or thermally activated delayed fluorescent (TADF) emitters; (ii) the hosts of fluorescent ...
Peng Xiao, Junhua Huang, Yicong Yu, Jian Yuan, Dongxiang Luo, Baiquan Liu, Dong Liang   +6 more
doaj   +1 more source

Unified charge transport in disordered organic field-effect transistors and light-emitting diodes [PDF]

, 2005
De ontdekking dat plastics zich als halfgeleiders kunnen gedragen heeft hun toepassingsgebied verruimd van speelgoed, tassen of meubilair naar elektronische producten zoals flexibele beeldschermen, radiofrequentie identificatie labels, fotocellen and ...
Tanase, Cristina, Tanase, Cristina,
core   +13 more sources

Vacuum Thermal Evaporation for OLEDs: Fundamentals, Optimization, and Implications for Perovskite LEDs

Advanced Electronic Materials
Organic light‐emitting diodes (OLEDs) are central to high‐end displays and solid‐state lighting due to their small thickness and high flexibility, wide color gamut, and low power consumption.
Chenxi Shen, Ying Hu, Siqian Zhou, Ziquan He, Junchao Han, Daquan Zhang, Lei Lu, Xiaoliang Mo, Qianpeng Zhang   +8 more
doaj   +1 more source