A ternary phosphine oxide host featuring thermally activated delayed fluorescence for blue PHOLEDs with >20% EQE and extremely low roll-offs

2018 ◽  
Vol 6 (25) ◽  
pp. 6747-6754 ◽  
Author(s):  
Chenyu Li ◽  
Xuefeng Fan ◽  
Chunmiao Han ◽  
Hui Xu
Keyword(s):  
Phosphine Oxide ◽  
Delayed Fluorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Deep Blue

A TADF host supported its deep-blue PHOLED with an EQE of 22.9% for maximum and 20.3% at 1000 nits.

Solution processible triphenylphosphine-oxide-cored dendritic hosts featuring thermally activated delayed fluorescence for power-efficient blue electrophosphorescent devices

2019 ◽  
Vol 7 (32) ◽  
pp. 9850-9855 ◽  
Author(s):  
Mingming Zhang ◽  
Liang Chen ◽  
Xiushang Xu ◽  
Lei Zhao ◽  
Shumeng Wang ◽  
...  
Keyword(s):  
Phosphine Oxide ◽  
Triphenylphosphine Oxide ◽  
Delayed Fluorescence ◽  
Device Performance ◽  
Thermally Activated Delayed Fluorescence ◽  
Power Efficient ◽  
Thermally Activated ◽  
New Hosts

A series of phosphine oxide based dendritic hosts have been developed. Compare with conventional dendritic host H2, the new hosts not only maintain high T1 but also have a small ΔEST and bring higher device performance.

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