Recently, the remarkable advances in thermally activated delayed fluorescence (TADF) materials have attracted much attention due to their 100% exciton utilization efficiency in organic light-emitting diodes (OLEDs). Although the commercialization of TADF materials is at an early stage, they exhibit enormous potential for next-generation OLEDs due to the comparable electroluminescence performance to metal of their phosphorescent complex counterparts, but without the presence of precious metal elements. This review summarizes the different types of TADF small molecules with various photophysical properties and the state-of-the-art molecular design strategies. Furthermore, the device engineering is discussed, and emerging optoelectronic applications, such as organic light-emitting electrochemical cells, organic lasing, and organic scintillators, are introduced. It is anticipated that this review can clarify the design of efficient TADF emitters and point out the direction of future development.

中文翻译：

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用于有机发光二极管的热激活延迟荧光材料


近年来，热激活延迟荧光（TADF）材料的显着进展因其在有机发光二极管（OLED）中100%的激子利用效率而备受关注。尽管TADF材料的商业化还处于早期阶段，但由于其电致发光性能与磷光配合物对应物的金属相当，但不存在贵金属元素，因此它们在下一代OLED方面展现出巨大的潜力。本综述总结了具有不同光物理性质的不同类型的 TADF 小分子以及最先进的分子设计策略。此外，还讨论了器件工程，并介绍了新兴的光电应用，例如有机发光电化学电池、有机激光和有机闪烁体。预计本次综述能够阐明高效TADF发射器的设计并指出未来的发展方向。