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Aggregation‐Induced Delayed Fluorescence Luminogens for Efficient Organic Light‐Emitting Diodes
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2018-12-10 , DOI: 10.1002/asia.201801588 Jiajie Zeng 1 , Jingjing Guo 1 , Hao Liu 1 , Jacky W. Y. Lam 2 , Zujin Zhao 1 , Shuming Chen 3 , Ben Zhong Tang 1, 2
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2018-12-10 , DOI: 10.1002/asia.201801588 Jiajie Zeng 1 , Jingjing Guo 1 , Hao Liu 1 , Jacky W. Y. Lam 2 , Zujin Zhao 1 , Shuming Chen 3 , Ben Zhong Tang 1, 2
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Aggregation‐induced delayed fluorescence (AIDF) can be regarded as a special case of aggregation‐induced emission (AIE). Luminogens with AIDF can simultaneously emit strongly in solid state and fully utilize the singlet and triplet excitons in organic light‐emitting diodes (OLEDs). In this work, two new AIDF luminogens, DMF‐BP‐DMAC and DPF‐BP‐DMAC, with an asymmetric D–A–D′ structure, are designed and synthesized. The characteristics of both luminogens are systematically investigated, including single crystal structures, theoretical calculations, photophysical properties and thermal stabilities. Inspired by their AIDF nature, the green‐emission non‐doped OLEDs based on them are fabricated, which afford good electroluminescence performances, with low turn‐on voltages of 2.8 V, high luminance of 52560 cd m−2, high efficiencies of up to 14.4 %, 42.3 cd A−1 and 30.2 lm W−1, and very small efficiency roll‐off. The results strongly indicate the bright future of non‐doped OLEDs on the basis of robust AIDF luminogens.
中文翻译：
聚集诱导的高效有机发光二极管的延迟荧光发光剂。
聚集诱导的延迟荧光（AIDF）可被视为聚集诱导发射（AIE）的特例。带有AIDF的发光剂可以同时以固态形式强烈发射，并充分利用有机发光二极管（OLED）中的单重态和三重态激子。在这项工作中，设计并合成了具有不对称D–A–D'结构的两种新型AIDF发光剂DMF–BP–DMAC和DPF–BP–DMAC。系统地研究了两种发光剂的特性，包括单晶结构，理论计算，光物理性质和热稳定性。受到AIDF特性的启发，制造了基于它们的绿色发光非掺杂OLED，它们具有良好的电致发光性能，具有2.8 V的低启动电压，52560 cd m -2的高亮度，高达14.4％的高效率，42.3 cd A -1和30.2 lm W -1的效率，并且滚降效率非常小。结果强烈表明，基于强大的AIDF发光剂，非掺杂OLED的光明前景。
更新日期：2018-12-10
中文翻译：
聚集诱导的高效有机发光二极管的延迟荧光发光剂。
聚集诱导的延迟荧光（AIDF）可被视为聚集诱导发射（AIE）的特例。带有AIDF的发光剂可以同时以固态形式强烈发射，并充分利用有机发光二极管（OLED）中的单重态和三重态激子。在这项工作中，设计并合成了具有不对称D–A–D'结构的两种新型AIDF发光剂DMF–BP–DMAC和DPF–BP–DMAC。系统地研究了两种发光剂的特性，包括单晶结构，理论计算，光物理性质和热稳定性。受到AIDF特性的启发，制造了基于它们的绿色发光非掺杂OLED，它们具有良好的电致发光性能，具有2.8 V的低启动电压，52560 cd m -2的高亮度，高达14.4％的高效率，42.3 cd A -1和30.2 lm W -1的效率，并且滚降效率非常小。结果强烈表明，基于强大的AIDF发光剂，非掺杂OLED的光明前景。
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