Combining Charge-Transfer Pathways to Achieve Unique Thermally Activated Delayed Fluorescence Emitters for High-Performance Solution-Processed, Non-doped Blue OLEDs

2017 ◽  
Vol 56 (47) ◽  
pp. 15006-15009 ◽  
Author(s):  
Xu-Lin Chen ◽  
Ji-Hui Jia ◽  
Rongmin Yu ◽  
Jian-Zhen Liao ◽  
Ming-Xue Yang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
High Performance ◽  
Delayed Fluorescence ◽  
Solution Processed ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated

New hole transport styrene polymers bearing highly π-extended conjugated side-chain moieties for high-performance solution-processable thermally activated delayed fluorescence OLEDs

2021 ◽  
Vol 12 (11) ◽  
pp. 1692-1699
Author(s):  
Ji Hye Lee ◽  
Jinhyo Hwang ◽  
Chai Won Kim ◽  
Amit Kumar Harit ◽  
Han Young Woo ◽  
...  
Keyword(s):  
High Performance ◽  
High Efficiency ◽  
Delayed Fluorescence ◽  
Hole Transport ◽  
Side Chain ◽  
Solution Processed ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Turn On ◽  
Solution Processable

New polystyrene-based polymers with high π-extended hole transport pendants were synthesized to obtain a low turn-on voltage and high efficiency in solution-processed green TADF-OLEDs.

scholarly journals Solution-Processed OLEDs Based on Thermally Activated Delayed Fluorescence Copper(I) Complexes with Intraligand Charge-Transfer Excited State

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 1125
Author(s):  
Teng Teng ◽  
Jinfan Xiong ◽  
Gang Cheng ◽  
Changjiang Zhou ◽  
Xialei Lv ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Density Functional ◽  
Delayed Fluorescence ◽  
Quantum Yields ◽  
Functional Theory ◽  
Solution Processed ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Wide Range

A new series of tetrahedral heteroleptic copper(I) complexes exhibiting efficient thermally-activated delayed fluorescence (TADF) in green to orange electromagnetic spectral regions has been developed by using D-A type N^N ligand and P^P ligands. Their structures, electrochemical, photophysical, and electroluminescence properties have been characterized. The complexes exhibit high photoluminescence quantum yields (PLQYs) of up to 0.71 at room temperature in doped film and the lifetimes are in a wide range of 4.3–24.1 μs. Density functional theory (DFT) calculations on the complexes reveal the lowest-lying intraligand charge-transfer excited states that are localized on the N^N ligands. Solution-processed organic light emitting diodes (OLEDs) based on one of the new emitters show a maximum external quantum efficiency (EQE) of 7.96%.

scholarly journals Through-space charge transfer hexaarylbenzene dendrimers with thermally activated delayed fluorescence and aggregation-induced emission for efficient solution-processed OLEDs

2019 ◽  
Vol 10 (10) ◽  
pp. 2915-2923 ◽  
Author(s):  
Xingdong Wang ◽  
Shumeng Wang ◽  
Jianhong Lv ◽  
Shiyang Shao ◽  
Lixiang Wang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Space Charge ◽  
Efficient Solution ◽  
Delayed Fluorescence ◽  
Electron Donors ◽  
Solution Processed ◽  
Thermally Activated Delayed Fluorescence ◽  
Aggregation Induced Emission ◽  
Thermally Activated

Through-space charge transfer hexaarylbenzene dendrimers containing circularly-arrayed electron donors and acceptors exhibit thermally activated delayed fluorescence and aggregation-induced emission effects, giving EQE of 14.2% for solution-processed OLEDs.

scholarly journals Design of efficient thermally activated delayed fluorescence blue host for high performance solution-processed hybrid white organic light emitting diodes

2019 ◽  
Vol 10 (10) ◽  
pp. 3054-3064 ◽  
Author(s):  
Xinxin Ban ◽  
Feng Chen ◽  
Yan Liu ◽  
Jie Pan ◽  
Aiyun Zhu ◽  
...  
Keyword(s):  
High Performance ◽  
Efficient Solution ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light

A highly efficient solution-processible TADF blue host is developed by molecular encapsulation. Due to the steric shield effect of the peripheral units, the triplet–triplet and triplet–polaron quenching of the TADF blue host are restricted.

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