Solution-processed organic light-emitting diodes with enhanced efficiency by using a non-conjugated polymer doped small-molecule hole-blocking layer

RSC Advances ◽  
2015 ◽  
Vol 5 (119) ◽  
pp. 98075-98079 ◽  
Author(s):  
Yuan Tian ◽  
Jinghong Peng ◽  
Xinjun Xu ◽  
Lidong Li
Keyword(s):  
Small Molecule ◽  
Conjugated Polymer ◽  
Luminous Efficiency ◽  
Organic Light Emitting Diodes ◽  
Blocking Layer ◽  
Solution Processed ◽  
Light Emitting ◽  
Turn On ◽  
Organic Light ◽  
Hole Blocking Layer

A non-conjugated polymer has been doped into a small-molecule material to act as the hole-blocking layer in solution-processed OLEDs, resulting in an enhanced luminous efficiency and a reduced turn-on voltage.

Efficiency Improvement of Organic Light Emitting Diodes with Co-Deposited Hole Blocking Layer

2010 ◽  
Vol 297-301 ◽  
pp. 561-566
Author(s):  
C.H. Liu ◽  
C.H. Tesng ◽  
C.P. Cheng
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Blocking Layer ◽  
Efficiency Improvement ◽  
Mixing Rate ◽  
Light Emitting ◽  
Organic Light ◽  
Color Coordinate ◽  
Hole Blocking Layer

There are several kinds of methods in improving the efficiency of organic light emitting diodes (OLEDs). In this work, we used a co-deposited hole blocking layer to improve the efficiency of OLEDs. The structure of the component is: ITO/ MTDATA(15 nm) /NPB(40 nm) /BCP(10 nm) /BCP: Alq(15 nm) /LiF(0.7 nm)/ Al(180 nm). We changed the mixing rate of the BCP:Alq layer to be capable of hole blocking and electron transporting, and then improved the efficiency of OLEDs. Finally, we prepared white light OLED with doping Rubrene in NPB. When the concentration of the NPB: Rubrene layer was 2.0 wt.%, the device could emit the white light at 100 mA/cm2, and the luminance was above 2300 cd/m2, and the color coordinate was x = 0.36, y = 0.37.

Solution Processed Small Molecule-Based Green Phosphorescent Organic Light-Emitting Diodes Using Polymer Binder

2011 ◽  
Vol 11 (12) ◽  
pp. 10737-10739 ◽  
Author(s):  
Eun Young Choi ◽  
Ji Hyun Seo ◽  
You Young Jin ◽  
Hoe Min Kim ◽  
Jong Tae Je ◽  
...  
Keyword(s):  
Small Molecule ◽  
Light Emitting Diodes ◽  
Polymer Binder ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light

Suppressing molecular aggregation in solution processed small molecule organic light emitting diodes

2014 ◽  
Vol 15 (1) ◽  
pp. 337-341 ◽  
Author(s):  
Stefan Höfle ◽  
Marina Pfaff ◽  
Hung Do ◽  
Christoph Bernhard ◽  
Dagmar Gerthsen ◽  
...  
Keyword(s):  
Small Molecule ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Molecular Aggregation ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light
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