Solution processed high efficiency blue and white phosphorescent organic light-emitting diodes using a high triplet energy exciton blocking layer

2011 ◽  
Vol 12 (8) ◽  
pp. 1293-1297 ◽  
Author(s):  
Kyoung Soo Yook ◽  
Jun Yeob Lee
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Blocking Layer ◽  
Triplet Energy ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light

scholarly journals High efficiency blue organic light-emitting diodes with below-bandgap electroluminescence

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Maria Vasilopoulou ◽  
Abd. Rashid bin Mohd Yusoff ◽  
Matyas Daboczi ◽  
Julio Conforto ◽  
Anderson Emanuel Ximim Gavim ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
High Mobility ◽  
Organic Light Emitting Diodes ◽  
Triplet Energy ◽  
Material Interface ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
Hole Transporting

AbstractBlue organic light-emitting diodes require high triplet interlayer materials, which induce large energetic barriers at the interfaces resulting in high device voltages and reduced efficiencies. Here, we alleviate this issue by designing a low triplet energy hole transporting interlayer with high mobility, combined with an interface exciplex that confines excitons at the emissive layer/electron transporting material interface. As a result, blue thermally activated delay fluorescent organic light-emitting diodes with a below-bandgap turn-on voltage of 2.5 V and an external quantum efficiency (EQE) of 41.2% were successfully fabricated. These devices also showed suppressed efficiency roll-off maintaining an EQE of 34.8% at 1000 cd m−2. Our approach paves the way for further progress through exploring alternative device engineering approaches instead of only focusing on the demanding synthesis of organic compounds with complex structures.

Solution processed high-efficiency low color temperature organic light emitting diodes and related materials

2015 ◽  
Vol 30 (3) ◽  
pp. 421-426
Author(s):  
叶尚辉 YE Shang-hui ◽  
胡天庆 HU Tian-qing ◽  
杨敏 YANG Min ◽  
刘丽萍 LIU Li-ping ◽  
贾振宏 JIA Zhen-hong ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Color Temperature ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light

High-Efficiency Solution-Processed Organic Light-Emitting Diodes with Tetradentate Platinum(II) Emitters

2019 ◽  
Vol 11 (48) ◽  
pp. 45161-45170 ◽  
Author(s):  
Gang Cheng ◽  
Yoonhyun Kwak ◽  
Wai-Pong To ◽  
Tsz-Lung Lam ◽  
Glenna So Ming Tong ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light

High-Efficiency Solution-Processed Small Molecule Electrophosphorescent Organic Light-Emitting Diodes

2011 ◽  
Vol 23 (31) ◽  
pp. 3590-3596 ◽  
Author(s):  
Min Cai ◽  
Teng Xiao ◽  
Emily Hellerich ◽  
Ying Chen ◽  
Ruth Shinar ◽  
...  
Keyword(s):  
Small Molecule ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light

PtAu3 cluster complexes with narrow-band emissions for solution-processed organic light emitting diodes

2019 ◽  
Vol 7 (9) ◽  
pp. 2604-2614 ◽  
Author(s):  
Nagarajan Natarajan ◽  
Lin-Xi Shi ◽  
Hui Xiao ◽  
Jin-Yun Wang ◽  
Li-Yi Zhang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Narrow Band ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Light Emitting ◽  
Cluster Complexes ◽  
Organic Light ◽  
Narrow Emission

Solution-processed OLEDs based on PtAu3 cluster complexes show high-efficiency electroluminescence with narrow emission bands through enhancing the co-planarity between their aromatic acetylides and platinum(ii) coordination square planes.

High efficiency, solution-processed, red phosphorescent organic light-emitting diodes from a polymer doped with iridium complexes

2009 ◽  
Vol 10 (7) ◽  
pp. 1412-1415 ◽  
Author(s):  
Myungkwan Song ◽  
Jin Su Park ◽  
Chul-Hyun Kim ◽  
Min Joung Im ◽  
Jang Soo Kim ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Iridium Complexes ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light
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