Quinazoline-based thermally activated delayed fluorescence emitters for high-performance organic light-emitting diodes with external quantum efficiencies about 28%

2021 ◽  
Author(s):  
Pan Li ◽  
Yepeng Xiang ◽  
Shaolong Gong ◽  
Wei-Kai Lee ◽  
Yu-Hsin Huang ◽  
...  
Keyword(s):  
High Performance ◽  
Light Emitting Diode ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Thermally Activated ◽  
Photoluminescence Quantum Yield ◽  
Organic Light

Incorporating both preferential orientation of organic emitters in the emitting layer and high photoluminescence quantum yield (PLQY) is a challenging issue in the organic light-emitting diode (OLED) field. In this...

Study of Configuration Differentia and Highly Efficient Deep-Red Thermally Activated Delayed Fluorescence Organic Light-Emitting Diode Based on Phenanthro[4,5-fgh]quinoxaline Derivatives

2021 ◽  
Author(s):  
Anqi Shang ◽  
Tong Lu ◽  
Hui Liu ◽  
Chunya Du ◽  
Futong Liu ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Red Emission ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Thermally Activated ◽  
Organic Light ◽  
Quinoxaline Derivatives

The development of efficient thermally activated delayed fluorescence (TADF) materials with a deep-red emission (emission wavelength beyond 620 nm) remains a great challenge in the field of organic light-emitting diodes...

scholarly journals Effect of a twin-emitter design strategy on a previously reported thermally activated delayed fluorescence organic light-emitting diode

2021 ◽  
Vol 17 ◽  
pp. 2894-2905
Author(s):  
Ettore Crovini ◽  
Zhen Zhang ◽  
Yu Kusakabe ◽  
Yongxia Ren ◽  
Yoshimasa Wada ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Design Strategy ◽  
Delayed Fluorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Thermally Activated ◽  
Photoluminescence Quantum Yield ◽  
Organic Light ◽  
New System

In this work we showcase the emitter DICzTRZ in which we employed a twin-emitter design of our previously reported material, ICzTRZ. This new system presented a red-shifted emission at 488 nm compared to that of ICzTRZ at 475 nm and showed a comparable photoluminescence quantum yield of 57.1% in a 20 wt % CzSi film versus 63.3% for ICzTRZ. The emitter was then incorporated within a solution-processed organic light-emitting diode that showed a maximum external quantum efficiency of 8.4%, with Commission Internationale de l’Éclairage coordinate of (0.22, 0.47), at 1 mA cm−2.

Thermally activated delayed fluorescence exciplex emitters for high-performance organic light-emitting diodes

2021 ◽  
Author(s):  
Ming Zhang ◽  
Cai-Jun Zheng ◽  
Hui Lin ◽  
Si-Lu Tao
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light

Owing to their natural thermally activated delayed fluorescence (TADF) characteristics, the development of exciplex emitters for organic light-emitting diodes (OLEDs) has witnessed booming progress in recent years.

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