Efficiency roll‐off in organic light‐emitting diodes

C Murawski, K Leo, MC Gather - Advanced Materials, 2013 - Wiley Online Library
Organic light‐emitting diodes (OLEDs) have attracted much attention in research and
industry thanks to their capability to emit light with high efficiency and to deliver high‐quality …

White organic light-emitting diodes: Status and perspective

S Reineke, M Thomschke, B Lüssem, K Leo - Reviews of Modern Physics, 2013 - APS
White organic light-emitting diodes (OLEDs) are ultrathin, large-area light sources made
from organic semiconductor materials. Over the past decades, much research has been …

Efficiency and rate of spontaneous emission in organic electroluminescent devices

M Furno, R Meerheim, S Hofmann, B Lüssem… - Physical Review B …, 2012 - APS
We examine spontaneous emission in organic electroluminescent devices and investigate
the influence of the local photonic mode density on the emissive properties of molecular …

Storage of charge carriers on emitter molecules in organic light-emitting diodes

C Weichsel, L Burtone, S Reineke, SI Hintschich… - Physical Review B …, 2012 - APS
Organic light-emitting diodes (OLEDs) using the red phosphorescent emitter iridium (III) bis
(2-methyldibenzo [f, h] quinoxaline)(acetylacetonate)[Ir (MDQ) 2 (acac)] are studied by time …

[HTML][HTML] Key issues and recent progress of high efficient organic light-emitting diodes

J Wang, F Zhang, J Zhang, W Tang, A Tang… - … of Photochemistry and …, 2013 - Elsevier
Organic light-emitting diodes (OLEDs) are considered as an ideal in next generation of flat
panel displays and solid state lighting source. Still, the stability and efficiency of OLEDs …

Bipolar host materials for organic light‐emitting diodes

KS Yook, JY Lee - The Chemical Record, 2016 - Wiley Online Library
It is important to balance holes and electrons in the emitting layer of organic light‐emitting
diodes to maximize recombination efficiency and the accompanying external quantum …

Bipolar phenanthroimidazole–diazacarbazole hybrids with appropriate bandgaps for highly efficient and low roll-off red, green and blue electroluminescent devices

B Wang, X Lv, J Tan, Q Zhang, Z Huang, W Yi… - Journal of Materials …, 2016 - pubs.rsc.org
By incorporating the novel electron-accepting 1, 5-diazacarbazole into different positions on
a rigid phenanthroimidazole skeleton, two para-linked bipolar phenanthroimidazole …

High-efficiency white organic light-emitting diodes integrating gradient exciplex allocation system and novel D-spiro-A materials

X Tang, XY Liu, Y Yuan, YJ Wang, HC Li… - … applied materials & …, 2018 - ACS Publications
How to maintain high power efficiency (PE) and color stability under operating brightness is
critical for the white organic light-emitting diodes (WOLEDs). To this end, two novel spiro …

Feel the heat: Nonlinear electrothermal feedback in organic LEDs

A Fischer, T Koprucki, K Gärtner… - Advanced Functional …, 2014 - Wiley Online Library
For lighting applications, organic light‐emitting diodes (OLED) need much higher brightness
than for displays, leading to self‐heating. Due to the temperature‐activated transport in …

Molecular spacing modulated conversion of singlet fission to triplet fusion in rubrene-based organic light-emitting diodes at ambient temperature

W Jia, Q Chen, L Chen, D Yuan, J Xiang… - The Journal of …, 2016 - ACS Publications
Triplet fusion (TF) and singlet fission (SF) are two important spin-coupled exciton
interactions that occur in rubrene-based organic light-emitting diodes (OLEDs). TF produces …