Tuning the emission from local excited-state to charge-transfer state transition in quinoxaline-based butterfly-shaped molecules: Efficient orange OLEDs based on thermally activated delayed fluorescence emitter

2017 ◽  
Vol 141 ◽  
pp. 325-332 ◽  
Author(s):  
Ling Yu ◽  
Zhongbin Wu ◽  
Cheng Zhong ◽  
Guohua Xie ◽  
Kailong Wu ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
State Transition ◽  
Delayed Fluorescence ◽  
Charge Transfer State ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Transfer State

Theoretical perspective for luminescent mechanism of hybridized local and charge transfer state emitter with aggregation induced emission: QM/MM study

CrystEngComm ◽  
2021 ◽  
Author(s):  
yuanyuan xu ◽  
X.G. Gao ◽  
Jiancai Leng ◽  
Jianzhong Fan
Keyword(s):  
Charge Transfer ◽  
Theoretical Perspective ◽  
Delayed Fluorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Aggregation Induced Emission ◽  
Thermally Activated ◽  
Fluorescent Materials ◽  
Luminescent Mechanism ◽  
New Generation ◽  
Transfer State

Apart from the thermally activated delayed fluorescence (TADF) systems, new-generation fluorescent materials with aggregation induced emission (AIE) and hybridized local and charge transfer (HLCT) state features have shown promising applications...

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%.

Sign in / Sign up

Export Citation Format

Share Document