Results 51 to 60 of about 9,073 (189)

Efficient and Color-tunable Organic Light-emitting Diodes for Rear Light Application on the Motor Vehicle

open access: yesMedžiagotyra, 2021
By designing double emissive layers, orange light-emitting layer (EML) and red EML and a space layer of blending hole-transporting material (HTM) with electron-transporting material (ETM), we have achieved efficient and color-tunable organic light ...
Yilian LI   +5 more
doaj   +1 more source

Space charges and negative capacitance effect in organic light-emitting diodes by transient current response analysis

open access: yes, 2017
Space charge capacitance and the physical mechanism of negative capacitance in organic light-emitting diodes (OLEDs) by transient current response analysis are investigated for the first time.
Yang Zhang   +5 more
core   +1 more source

Full colour RGB OLEDs on CMOS for active-matrix OLED microdisplays

open access: yes, 2022
Art. 63331LMicrodisplays are used in various optical devices such as headsets, viewfinders and helmet-mounted displays. The use of organic light emitting diodes (OLEDs) in a microdisplay on silicon substrate provides the opportunity of lower power ...
Amelung, J.   +3 more
core   +1 more source

Desenvolvimento de películas de PDMS para o aumento da eficácia luminosa de lâmpadas de OLED [PDF]

open access: yes, 2014
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Florianópolis, 2014.O objetivo principal deste trabalho é desenvolver películas finas de ...
Vicente, Cristiano
core  

High electron mobility layers of triazines for improving driving voltages, power conversion efficiencies, and operational stability of organic light-emitting diodes [PDF]

open access: yes, 2010
We have shown that triazine compounds of 2-biphenyl-4-yl-4,6-bis-(4′-pyridin-2-yl-biphenyl-4-yl)-[1,3,5]triazine (DPT) and 2,4-bis-biphenyl-4-yl-6-(4′-pyridin-2-yl-biphenyl-4-yl)-[1,3,5]triazine (MPT) work as excellent electron-transport layers (ETLs) of
Murata, Hideyuki   +6 more
core   +1 more source

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

open access: yesNature 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   +5 more
doaj   +1 more source

Exciplex hosts for blue phosphorescent organic light-emitting diodes

open access: yesJournal 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

Pyridine-incorporated dihexylquaterthiophene : a novel blue emitter for organic light emitting diodes (OLEDs)

open access: yes, 2012
The synthesis and characterisation of 2,5-bis(5′-hexyl-[2,2′- bithiophen]-5-yl)pyridine (Th4PY) and its use as a blue emitter in organic light emitting diodes (OLEDs) is reported.
Sonar, Prashant   +4 more
core   +1 more source

Directional organic light-emitting diodes using photonic microstructure [PDF]

open access: yes, 2015
This thesis describes investigations into the optical and device design of organic light-emitting diodes (OLEDs) with the aim of exploring the factors controlling the spatial emission pattern of OLEDs and developing novel OLEDs with directional ...
Zhang, Shuyu
core   +1 more source

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

open access: yesJournal 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   +4 more
doaj   +1 more source

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