Efficiency Improvement of Top-Emission Organic Light Emitting Diode by Using UV-Ozone, Doped Emission Layer, and Hole-Blocking Layer

2010 ◽  
Vol 157 (2) ◽  
pp. J25 ◽  
Author(s):  
Ying-Nan Lai ◽  
Wei-Chou Hsu ◽  
Ching-Sung Lee ◽  
Ching-Wu Wang ◽  
Chiu-Sheng Ho ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Blocking Layer ◽  
Efficiency Improvement ◽  
Emission Layer ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Hole Blocking Layer ◽  
Uv Ozone

Influences of Dye Doping and Hole Blocking Layer Insertion on OLED Performance

2010 ◽  
Vol 297-301 ◽  
pp. 555-560
Author(s):  
C.H. Tesng ◽  
C.H. Liu ◽  
C.P. Cheng
Keyword(s):  
Light Emitting Diode ◽  
Blocking Layer ◽  
Carrier Injection ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Förster Energy Transfer ◽  
Hole Blocking Layer ◽  
Dye Doping ◽  
Oled Performance

This study presents the influences of dye doping and hole blocking layer insertion on the electroluminescent properties of the blue organic light emitting diode. The luminance of the device was significantly improved by BCzVB doping because of the utilization of effective Förster energy transfer and the improvement of carrier injection and trapping; a BCzVB dominant emission was observed. Furthermore, when a BCP layer was inserted between the TBADN:BCzVB and Alq3 layers, a thin BCP layer insertion enhanced the injection of electrons and improved the luminance of the device. In contrast, a thick BCP layer insertion caused a delay in electron transport, resulting in a decrease in current density and a deterioration in luminance.

Efficiency improvement in flexible phosphorescent organic light-emitting diode

2006 ◽  
Author(s):  
S. Y. Su ◽  
Y. S. Tsai ◽  
F. S. Juang ◽  
L. W. Ji ◽  
S. H. Wang ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Efficiency Improvement ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light

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.

High efficiency and simplified white organic light-emitting diode based on a single-host emission layer

2016 ◽  
Vol 220 ◽  
pp. 329-333 ◽  
Author(s):  
Runda Guo ◽  
Shiming Zhang ◽  
Shouzhen Yue ◽  
Pingrui Yan ◽  
Yukun Wu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diode ◽  
Emission Layer ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Single Host
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