A Macrospirocyclic Carbazole–Fluorene Oligomer as a Solution-Processable Matrix Host Material for Blue Phosphorescent Organic Light-Emitting Diodes with Low Turn-On Voltage and Efficiency Roll-Off

2017 ◽  
Vol 121 (16) ◽  
pp. 8692-8702 ◽  
Author(s):  
Nengquan Li ◽  
Zhaokang Fan ◽  
Yayun Fang ◽  
Le Li ◽  
Yiwu Quan ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Host Material ◽  
Light Emitting ◽  
Turn On ◽  
Organic Light ◽  
Solution Processable ◽  
Blue Phosphorescent

Low-driving-voltage sky-blue phosphorescent organic light-emitting diodes with bicarbazole-bipyridine bipolar host materials

2021 ◽  
Author(s):  
Deli Li ◽  
Di Liu ◽  
Jiuyan Li ◽  
Ruizhi Dong ◽  
Botao Liu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Driving Voltage ◽  
Light Emitting ◽  
Turn On ◽  
Organic Light ◽  
Host Materials ◽  
Blue Phosphorescent

Two bipolar host containing bipyridine and bicarbazole exhibited rapid and balanced charge transportation, which resulting the extremely low turn-on voltages of 2.3 and 2.4 V, respectively, and the high efficiency of 23.7% and 52.6 lm W−1.

scholarly journals Spiro-configured phenyl acridine thioxanthene dioxide as a host for efficient PhOLEDs

2015 ◽  
Vol 51 (7) ◽  
pp. 1313-1315 ◽  
Author(s):  
Maxime Romain ◽  
Denis Tondelier ◽  
Bernard Geffroy ◽  
Anna Shirinskaya ◽  
Olivier Jeannin ◽  
...  
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Host Material ◽  
Light Emitting ◽  
Organic Light ◽  
Blue Phosphorescent

A new high triplet organic semi-conductor based on a donor-spiro-acceptor design has been synthesized and used as a host material in high performance (EQE = 11.4% at 10 mA cm−2) sky blue phosphorescent organic light emitting diodes.

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