scholarly journals Pyrene-based blue emitters with aggregation-induced emission features for high-performance organic light-emitting diodes

2019 ◽  
Vol 7 (8) ◽  
pp. 2283-2290 ◽  
Author(s):  
Xing Feng ◽  
Zeng Xu ◽  
Zhen Hu ◽  
Chunxuan Qi ◽  
Dongxiang Luo ◽  
...  
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Maximum Luminance ◽  
Light Emitting ◽  
Turn On ◽  
Organic Light ◽  
Blue Emitters ◽  
Low Efficiency ◽  
A Current

Non-doped organic light-emitting diodes (OLEDs) using pyrene-based AIE luminogens as emitters displayed sky-blue light at 492 nm at a low turn-on voltage (3.1 V) with a maximum luminance of 15 750 cd m−2 and a current efficiency of 7.34 cd A−1 with a low efficiency roll-off.

scholarly journals Fused Triphenylamine Moiety Based Fluorescent Emitters for Deep Blue OLEDs with High Luminance and Low Turn-on Voltages

2022 ◽  
Author(s):  
Lijie Wu ◽  
Jinhao Xu ◽  
Zewei Zhang ◽  
Wangjuan Xue ◽  
Yaowu He ◽  
...  
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
High Luminance ◽  
Light Emitting ◽  
Turn On ◽  
Deep Blue ◽  
Organic Light ◽  
Blue Emitters

The design of blue emitters is still desired for high performance organic light-emitting diodes (OLEDs). In this work, two blue emitters with the fused triphenylamine (FTPA) moiety, PIAN-FTPA and PI-FTPA,...

Improvement of efficiency and its roll-off at high brightness in white organic light-emitting diodes by strategically managing triplet excitons in the emission layer

2018 ◽  
Vol 6 (40) ◽  
pp. 10793-10803 ◽  
Author(s):  
Shian Ying ◽  
Dezhi Yang ◽  
Xianfeng Qiao ◽  
Yanfeng Dai ◽  
Qian Sun ◽  
...  
Keyword(s):  
High Performance ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Emission Layer ◽  
High Brightness ◽  
Light Emitting ◽  
Organic Light ◽  
Low Efficiency ◽  
Triplet Excitons

High-performance WOLEDs realizing high efficiency and low efficiency roll-off simultaneously were achieved by strategically managing triplet excitons in the emission layer.

Simultaneous high efficiency/CRI/spectral stability and low efficiency roll-off hybrid white organic light-emitting diodes via simple insertion of ultrathin red/green phosphorescent emitters in a blue exciplex

2020 ◽  
Vol 8 (36) ◽  
pp. 12450-12456 ◽  
Author(s):  
Yuwen Chen ◽  
Yibing Wu ◽  
Chengwei Lin ◽  
Yanfeng Dai ◽  
Qian Sun ◽  
...  
Keyword(s):  
High Performance ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Spectral Stability ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Low Efficiency

High performance hybrid WOLEDs have been realized by precisely inserting ultrathin red/green phosphorescent layers in a blue exciplex emitter.

Effect of Li2O/Al Cathode in Alq3 Based Organic Light-Emitting Diodes

2008 ◽  
Vol 8 (9) ◽  
pp. 4684-4687 ◽  
Author(s):  
Eun Chul Shin ◽  
Hui Chul Ahn ◽  
Wone Keun Han ◽  
Tae Wan Kim ◽  
Won Jae Lee ◽  
...  
Keyword(s):  
Power Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Turn On ◽  
Organic Light ◽  
Maximum Current ◽  
The One ◽  
Luminance Efficiency ◽  
A Current

An effect of bilayer cathode Li2O/Al was studied in Alq3 based organic light-emitting diodes with a variation of Li2O layer thickness. The current-luminance-voltage characteristics of ITO/TPD/Alq3/Li2O/Al device were measured at ambient condition to investigate the effect of Li2O/Al. It was found that when the thickness of Li2O layer is in the range of 0.5∼1 nm, there are improvements in luminance, efficiency, and turn-on voltage of the device. A current density and a luminance are increased by about 100 times, a turn-on voltage is lowered from 6 V to 3 V, a maximum current efficiency is improved by a factor of 2.3, and a maximum power efficiency is improved by a factor of 3.2 for a device with a use of thin Li2O layer compared to those of the one without the Li2O layer. These improvements are thought to be due to a lowering of electron-barrier height for electron injection from the cathode to the emissive layer.

Recent advances of the emitters for high performance deep-blue organic light-emitting diodes

2015 ◽  
Vol 3 (5) ◽  
pp. 913-944 ◽  
Author(s):  
Xiaolong Yang ◽  
Xianbin Xu ◽  
Guijiang Zhou
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Deep Blue ◽  
Organic Light ◽  
Recent Advances ◽  
Critical Issues ◽  
Blue Emitters

Recent advances in deep-blue emitters furnishing high performance OLEDs and associated critical issues are discussed and reviewed.

Multifunctional pyridine styrylphenanthroimidazoles: Electron transport materials for blue FOLEDs with low efficiency roll-off and host for PHOLEDs with low turn-on voltage

2021 ◽  
Author(s):  
Jayaraman Jayabharathi ◽  
Sekar Sivaraj ◽  
Venugopal Thanikachalam ◽  
Jagathratchagan Anudeebhana
Keyword(s):  
Electron Transport ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Turn On ◽  
Organic Light ◽  
Host Materials ◽  
Low Efficiency

We have reported pyridine styrylphenanthroimidazole derivatives, SPPI-C2Py, SPPI-N1Py and SPPI-C2N1Py as efficient electron transport materials (ETMs) for blue fluorescent OLEDs (FOLEDs) and host materials for phosphorescent organic light emitting diodes...

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