scholarly journals Diazirine-based photo-crosslinkers for defect free fabrication of solution processed organic light-emitting diodes

2020 ◽  
Vol 8 (34) ◽  
pp. 11988-11996
Author(s):  
Kaustav Dey ◽  
S. Roy Chowdhury ◽  
Erik Dykstra ◽  
Aleksandr Koronatov ◽  
H. Peter Lu ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Organic Semiconductor ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Layer Surface ◽  
Semiconductor Films ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light

Diazirine mediated photocross-linking (365 nm, 15 mins) of organic semiconductor films dramatically reduces the inter-layer surface roughness which results in significant improvement in OLED efficiency.

Advantages and disadvantages of vacuum-deposited and spin-coated amorphous organic semiconductor films for organic light-emitting diodes

2015 ◽  
Vol 3 (42) ◽  
pp. 11178-11191 ◽  
Author(s):  
Maki Shibata ◽  
Yoshiya Sakai ◽  
Daisuke Yokoyama
Keyword(s):  
Organic Semiconductor ◽  
Molecular Orientation ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Transition Temperatures ◽  
Semiconductor Films ◽  
Light Emitting ◽  
Advantages And Disadvantages ◽  
Organic Light

Film densities, transition temperatures, and degrees of horizontal molecular orientation of vacuum-deposited and spin-coated amorphous organic semiconductor films used for OLEDs are systematically and quantitatively compared, and their general differences are discussed.

Ultra-smooth and robust graphene-based hybrid anode for high-performance flexible organic light-emitting diodes

2021 ◽  
Author(s):  
zhikun zhang ◽  
lianlian xia ◽  
Lizhao Liu ◽  
Yuwen Chen ◽  
zuozhi wang ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Chemical Vapor ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Large Particles

Large surface roughness, especially caused by the large particles generated during both the transfer and the doping processes of graphene grown by chemical vapor deposition (CVD) is always a critical...

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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