Highly Efficient and Stable Blue Organic Light-Emitting Diodes through Selective Quenching of Long-Living Triplet Exciton of Thermally Activated Delayed Fluorescence Emitter

2021 ◽  
Author(s):  
Won Jae Chung ◽  
Jun Yeob Lee
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Triplet Exciton ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
Device Lifetime

In the organic light emitting diodes (OLEDs), the achievement of high efficiency and long device lifetime has been a goal due to the short device lifetime of the high efficiency...

Design of thermally activated delayed fluorescent sensitizers for high efficiency over 20% and long lifetime in yellow fluorescent organic light-emitting diodes

2020 ◽  
Vol 8 (15) ◽  
pp. 5265-5272 ◽  
Author(s):  
Ji Han Kim ◽  
Kyung Hyung Lee ◽  
Jun Yeob Lee
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
Long Lifetime

Yellow thermally activated delayed fluorescence materials were synthesized using two types of acceptors of 2,4,6-triphenylpyrimidine-5-carbonitrile and 4-(3-cyanophenyl)-2,6-diphenylpyrimidine-5-carbonitrile combined with a strong donor.

Benzonitrile-based AIE polymer host with simple synthesis process for high-efficiency solution-processable green and blue TADF organic light emitting diodes

2022 ◽  
Author(s):  
Tao Zhou ◽  
Kaizhi Zhang ◽  
Qingpeng Cao ◽  
Hui Xu ◽  
Xinxin Ban ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Synthesis Process ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
Polymer Host

Polymer host material have great potential for enable small molecular thermally activated delayed fluorescence (TADF) emitters to construct solution-processed organic light-emitting diodes (OLEDs). Herein, four novel benzonitrile-based polymer host, P4CzCN-PA,...

Acceptor modulation for improving a spiro-type thermally activated delayed fluorescence emitter

2020 ◽  
Vol 8 (25) ◽  
pp. 8579-8584 ◽  
Author(s):  
Xiang-Dong Zhu ◽  
Chen-Chen Peng ◽  
Fan-Cheng Kong ◽  
Sheng-Yi Yang ◽  
Hong-Cheng Li ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Third Generation ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Yellowish Green ◽  
Organic Light

A novel donor (D)–spiro-acceptor (A) emitter, namely 10-phenyl-10H-spiro[acridine-9,9′-fluorene]-2′,4′,7′-tricarbonitrile (SAF-3CN), was synthesized for high efficiency, yellowish green third-generation thermally activated delayed fluorescence (TADF) organic light-emitting diodes (OLEDs).

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