Efficiency improvement of red organic light-emitting diodes using a blue phosphorescent exciton blocking layer

2009 ◽  
Vol 129 (3) ◽  
pp. 300-302 ◽  
Author(s):  
Kyoung Soo Yook ◽  
Jun Yeob Lee
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Blocking Layer ◽  
Efficiency Improvement ◽  
Light Emitting ◽  
Organic Light ◽  
Blue Phosphorescent

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.

Long lifetime blue phosphorescent organic light-emitting diodes with an exciton blocking layer

2015 ◽  
Vol 3 (18) ◽  
pp. 4640-4645 ◽  
Author(s):  
Jeong-A Seo ◽  
Sang Kyu Jeon ◽  
Myoung Seon Gong ◽  
Jun Yeob Lee ◽  
Chang Ho Noh ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Hole Transport ◽  
Organic Light Emitting Diodes ◽  
Blocking Layer ◽  
Triplet Energy ◽  
Light Emitting ◽  
Organic Light ◽  
Long Lifetime ◽  
Blue Phosphorescent ◽  
Transport Type

An acridine derived compound, 9,9-dimethyl-10-(9-phenyl-9H-carbazol-3-yl)-9,10-dihydroacridine (PCZAC), was newly designed as a hole transport type high triplet energy material for application as a hole transport type exciton blocking layer of blue phosphorescent organic light-emitting diodes.

Improved efficiency and stable lifetime in blue phosphorescent organic light-emitting diodes using a stable exciton blocking layer

2015 ◽  
Vol 123 ◽  
pp. 254-256 ◽  
Author(s):  
Jeong-A Seo ◽  
Myoung Seon Gong ◽  
Sang Kyu Jeon ◽  
Jun Yeob Lee ◽  
Chang Ho Noh ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Blocking Layer ◽  
Light Emitting ◽  
Organic Light ◽  
Blue Phosphorescent

scholarly journals White Organic Light Emitting Diodes using Red and Blue Phosphorescent Materials with Blocking Layer

2007 ◽  
Vol 8 (5) ◽  
pp. 218-221 ◽  
Author(s):  
Jung-Hyun Park ◽  
Gu-Young Kim ◽  
Seok-Jae Lee ◽  
Ji-Hyun Seo ◽  
Ji-Hoon Seo ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Blocking Layer ◽  
Light Emitting ◽  
Organic Light ◽  
Blue Phosphorescent
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