Intermolecular Charge-Transfer Transition Emitter Showing Thermally Activated Delayed Fluorescence for Efficient Non-Doped OLEDs

2018 ◽  
Vol 130 (30) ◽  
pp. 9624-9628 ◽  
Author(s):  
Yi-Zhong Shi ◽  
Kai Wang ◽  
Xing Li ◽  
Gao-Le Dai ◽  
Wei Liu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Delayed Fluorescence ◽  
Charge Transfer Transition ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Intermolecular Charge Transfer

Charge-transfer transition regulation of thermally activated delayed fluorescence emitters by changing the valence of sulfur atoms

2020 ◽  
Vol 8 (48) ◽  
pp. 17457-17463
Author(s):  
Xiang Zhang ◽  
Jia-Xiong Chen ◽  
Kai Wang ◽  
Yi-Zhong Shi ◽  
Xiao-Chun Fan ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Sulfur Atom ◽  
Delayed Fluorescence ◽  
Charge Transfer Transition ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Charge Transfer Transitions

Changing the valence of a sulfur atom to form two novel thermally activated delayed fluorescence emitters with different charge transfer transitions.

Near-infrared-II thermally activated delayed fluorescence organic light-emitting diodes

2020 ◽  
Vol 56 (63) ◽  
pp. 8988-8991
Author(s):  
Qingxin Liang ◽  
Jingyi Xu ◽  
Jie Xue ◽  
Juan Qiao
Keyword(s):  
Charge Transfer ◽  
Near Infrared ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
Intermolecular Charge Transfer

The first thermally activated delayed fluorescence emitter and organic light-emitting diodes in the near-infrared II region were realized via intermolecular charge-transfer aggregates.

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%.

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