Dibenzo[a,j]phenazine-Cored Donor-Acceptor-Donor Compounds as Green-to-Red/NIR Thermally Activated Delayed Fluorescence Organic Light Emitters
Dibenzo[a,j]phenazine-Cored Donor-Acceptor-Donor Compounds as Green-to-Red/NIR Thermally Activated Delayed Fluorescence Organic Light Emitters
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DOI：
10.1002/anie.201600113
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发表时间：
2016-05-04
影响因子：
16.6
通讯作者：
Monkman, Andrew P.
中科院分区：
文献类型：
--
作者：
Data, Przemyslaw;Pander, Piotr;Monkman, Andrew P.
基于U型D-A-D结构和一种新型的接收单元，研制了一种新型的热激活延迟荧光（TADF）发射器。所有的化合物都具有很小的单重态-三重态能量分裂（E-ST），范围在0.02 - 0.20eV之间，并显示出有效的TADF性质。受体单元的最低三重态在TADF机理中起着关键作用。用这些TADF发射体制造的OLED实现了高达16%的外部量子效率（EQE）的优异效率。
A new family of thermally activated delayed fluorescence (TADF) emitters based on U-shaped D-A-D architecture with a novel accepting unit has been developed. All investigated compounds have small singlet-triplet energy splitting (E-ST) ranging from 0.02 to 0.20eV and showed efficient TADF properties. The lowest triplet state of the acceptor unit plays the key role in the TADF mechanism. OLEDs fabricated with these TADF emitters achieved excellent efficiencies up to 16% external quantum efficiency (EQE).