Robust Luminescent Materials with Prominent Aggregation-Induced Emission and Thermally Activated Delayed Fluorescence for High-Performance Organic Light-Emitting Diodes
Robust Luminescent Materials with Prominent Aggregation-Induced Emission and Thermally Activated Delayed Fluorescence for High-Performance Organic Light-Emitting Diodes
复制标题
用于高性能有机发光二极管的具有突出聚集诱导发射和热激活延迟荧光的鲁棒发光材料
DOI：
10.1021/acs.chemmater.7b00450
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发表时间：
2017-04-25
影响因子：
8.6
通讯作者：
Tang, Ben Zhong
中科院分区：
文献类型：
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作者：
Guo, Jingjing;Li, Xiang-Long;Tang, Ben Zhong
聚集诱导发射（AIE）材料通过抑制浓度猝灭和激子湮灭而具有优异的固态发射，而热激活延迟荧光（TADF）材料能够充分利用电生成的单重态和三重态激子。AIE和TADF的合作应该是一个合理的策略，以设计新的强大的发光材料。本文基于中心苯甲酰受体核和不同的给体单元，开发了两种具有突出AIE和TADF性能的新材料。系统地研究了它们的晶体结构、电子结构、热稳定性、电子物理性质和能级结构。基于它们的掺杂有机发光二极管（OLED）显示绿色光并且表现出色，提供高达19.2%、60.6 cd A-1和59.2 lm W-1的优异电致发光（EL）效率。他们的非掺杂OLED在非常低的开启电压（2.7 V）下开启，并提供黄光和高EL效率...
Aggregation-induced emission (AIE) materials have excellent solid-state emission by suppressing concentration quenching and exciton annihilation, while thermally activated delayed fluorescence (TADF) materials are able to fully utilize electrogenerated singlet and triplet excitons. The collaboration of AIE and TADF should be a rational strategy to design novel robust luminescent materials. Herein, two new materials with both prominent AIE and TADF properties are developed based on a central benzoyl acceptor core and different donor units. Their crystal and electronic structures, thermal stabilities, photophysical properties, and energy levels are investigated systematically. The doped organic light-emitting diodes (OLEDs) based on them show green lights and perform outstandingly, providing excellent electroluminescence (EL) efficiencies of up to 19.2%, 60.6 cd A–1, and 59.2 lm W–1. Their nondoped OLEDs are turned on at very low turn-on voltages (2.7 V) and afford yellow lights and high EL efficiencies of ...