Efficient white organic light-emitting diodes based on a balanced split of the exciton-recombination zone using a graded mixed layer as an electron-blocking layer

2010 ◽  
Vol 18 (1) ◽  
pp. 97
Author(s):  
C. K. Kim ◽  
I -H. Noh ◽  
T -S. Lee ◽  
B -W. Lee ◽  
C. Hong ◽  
...  
Keyword(s):  
Mixed Layer ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Blocking Layer ◽  
Electron Blocking Layer ◽  
Light Emitting ◽  
Organic Light ◽  
Exciton Recombination ◽  
Recombination Zone

Influence of the Electron Blocking Layer on the Performance of Multilayer White Organic Light-Emitting Diodes

2012 ◽  
Vol 1402 ◽  
Author(s):  
Caroline Weichsel ◽  
Sebastian Reineke ◽  
Björn Lüssem ◽  
Karl Leo
Keyword(s):  
Electrical Properties ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Carrier Transport ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Blocking Layer ◽  
Electron Blocking Layer ◽  
Light Emitting ◽  
Organic Light

ABSTRACTThe effect of the electron blocking layer on the performance of white organic light-emitting diodes is studied. A variation of the material influences not only the carrier transport, but also the light distribution from the different emitters. Highest external quantum efficiency is reached for the material with the worst electrical properties, while highest luminous efficacy is obtained for the material with the best transport characteristics.

High efficiency and long lifetime fluorescent white organic light-emitting diodes by phosphor sensitization to strategically manage singlet and triplet excitons

2021 ◽  
Vol 9 (10) ◽  
pp. 3626-3634
Author(s):  
Jingwen Yao ◽  
Wei Liu ◽  
Chengwei Lin ◽  
Qian Sun ◽  
Yanfeng Dai ◽  
...  
Keyword(s):  
High Performance ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Exciton Recombination ◽  
Long Lifetime ◽  
Triplet Excitons ◽  
Recombination Zone

The positions of the phosphor-sensitized yellow EML from the exciton recombination zone were controlled to strategically utilize singlet and triplet excitons for blue and yellow emissions to realize high-performance fluorescent WOLEDs.

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