Dec 11, 2017 · In the present work, we show how by simple variation of molecular structure both blue emitters exhibiting delayed fluorescence and ambipolar high triplet energy hosts can be obtained.

Studies of delayed electroluminescence in highly efficient fluorescent organic light-emitting diodes (OLEDs) of many dissimilar architectures indicate that the triplet–triplet annihilation (TTA) significantly increases yield of excited singlet states—emitting molecules in this type of device thereby contributes substantially to their efficiency.

Dec 21, 2017 · In the present work, we show how by simple variation of molecular structure both blue emitters exhibiting delayed fluorescence and ambipolar high triplet energy hosts can be obtained.

Feb 12, 2023 · In this review, recent research advances on the molecular design strategies, photophysical properties of TTA-based materials (both blue emitters and host materials), mechanism of TTA-based electroluminescence, as well as their OLED applications are presented comprehensively.

Oct 17, 2023 · Blue OLEDs based on triplet–triplet annihilation (TTA) up-conversion materials have potential to achieve long lifetimes due to fusing two triplet excitons to one radiative singlet exciton, but there is a lack of an in-depth understanding of exciton …

May 31, 2023 · Thermally activated delayed fluorescence (TADF) molecules have been established as promising candidates for triplet-harvesting emitters in organic light-emitting diodes (OLEDs), which can lead to internal charge-to-photon conversion efficiency close to 100% (1).

Sep 27, 2022 · Organic blue emitters capable of proceeding triplet–triplet annihilation (TTA) are of great importance for high-efficiency blue organic light-emitting diodes (OLEDs).

Nov 16, 2020 · Organic light-emitting diodes (OLEDs) based on thermally activated delayed fluorescence (TADF) show increased efficiencies due to efficient upconversion of nonemissive triplet states to emissive singlet states via reverse intersystem crossing (RISC).

Aug 1, 2023 · Herein, we designed and synthesized a novel blue triplet-triplet annihilation (TTA) emitter with a fan-shape torsional molecular structure, namely TbuPyB, which is based on benzene as core and three tert -butylpyrene as arm. The photophysical, electrochemical and electroluminescent performances of TbuPyB were systematically investigated.

Mar 22, 2023 · 基于三线态-三线态湮灭 (TTA) 机制的有机光功能材料作为一种新兴的发光材料或主体材料，因其独特的光物理特性，在制备高效稳定蓝色OLEDs方面展现出巨大的应用潜力，引起了广泛关注。 因此，我们总结了TTA材料在有机电致发光领域的最新研究进展。 首先简要介绍了目前实现高效率有机电致发光器件的一般工作机制，并重点阐述了TTA机制，然后系统总结了TTA材料的分子结构一般设计策略和发光器件性能。 最后简要总结了TTA材料应用于OLED领域中存在 …