All‐Solution‐Processed Red and Orange‐Red Organic Light‐Emitting Diodes with High‐Efficiencies: The Effect of Mixed‐Host Emissive Layers and Thermal Annealing Treatment

ChemPlusChem ◽  
2019 ◽  
Vol 84 (9) ◽  
pp. 1375-1383 ◽  
Author(s):  
Yu‐Fan Chang ◽  
Lan‐Sheng Yang ◽  
Hsiao‐Tso Su ◽  
Si‐Yi Liao ◽  
Mu‐Chun Niu ◽  
...  
Keyword(s):  
Thermal Annealing ◽  
Light Emitting Diodes ◽  
Annealing Treatment ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light ◽  
Thermal Annealing Treatment

scholarly journals Solution processed organic light-emitting diodes using a triazatruxene crosslinkable hole transporting material

RSC Advances ◽  
2018 ◽  
Vol 8 (62) ◽  
pp. 35719-35723 ◽  
Author(s):  
Azin Babaei ◽  
Kasparas Rakstys ◽  
Simon Guelen ◽  
Vahid Fallah Hamidabadi ◽  
Maria-Grazia La-Placa ◽  
...  
Keyword(s):  
Thermal Annealing ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Flexible Substrates ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light ◽  
Hole Transporting ◽  
Hole Transporting Material

A cross-linkable triazatruxene that leads to insoluble films upon thermal annealing at temperatures compatible with flexible substrates is presented.

scholarly journals Solution-Processed Efficient Blue Phosphorescent Organic Light-Emitting Diodes (PHOLEDs) Enabled by Hole-Transport Material Incorporated Single Emission Layer

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 554
Author(s):  
Taeshik Earmme
Keyword(s):  
Light Emitting Diodes ◽  
Blue Emission ◽  
Hole Transport ◽  
Organic Light Emitting Diodes ◽  
Emission Layer ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light ◽  
Single Emission ◽  
Blue Phosphorescent

Solution-processed blue phosphorescent organic light-emitting diodes (PHOLEDs) based on a single emission layer with small-molecule hole-transport materials (HTMs) are demonstrated. Various HTMs have been readily incorporated by solution-processing to enhance hole-transport properties of the polymer-based emission layer. Poly(N-vinylcarbazole) (PVK)-based blue emission layer with iridium(III) bis(4,6-(di-fluorophenyl)pyridinato-N,C2′)picolinate (FIrpic) triplet emitter blended with solution-processed 1,1-bis[(di-4-tolylamino)phenyl]cyclohexane (TAPC) gave luminous efficiency of 21.1 cd/A at a brightness of 6220 cd/m2 with an external quantum efficiency (EQE) of 10.6%. Blue PHOLEDs with solution-incorporated HTMs turned out to be 50% more efficient compared to the reference device without HTMs. The high hole mobility, high triplet energy of HTM, and favorable energy transfer between HTM blended PVK host and FIrpic blue dopant were found to be important factors for achieving high device performance. The results are instructive to design and/or select proper hole-transport materials in solution-processed single emission layer.

Development of efficient solution-processed red phosphorescent organic light-emitting diodes using carrier transport materials

2010 ◽  
Vol 160 (15-16) ◽  
pp. 1623-1626 ◽  
Author(s):  
Myungkwan Song ◽  
Jin Su Park ◽  
Chul-Hyun Kim ◽  
Jang Soo Kim ◽  
Yeong-Soon Gal ◽  
...  
Keyword(s):  
Carrier Transport ◽  
Efficient Solution ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light

scholarly journals Horizontal molecular orientation in solution-processed organic light-emitting diodes

2015 ◽  
Vol 106 (6) ◽  
pp. 063301 ◽  
Author(s):  
L. Zhao ◽  
T. Komino ◽  
M. Inoue ◽  
J.-H. Kim ◽  
J. C. Ribierre ◽  
...  
Keyword(s):  
Molecular Orientation ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light
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