Abstract A device approach to improve the device lifetime of exciplex organic light-emitting diodes was studied by managing the intermolecular interaction and concentration quenching of exciplexes. The exciplexes were made up of a p-type material and a bipolar n-type material, in which the ratio of the p-type material was less than 50% for dispersion in the n-type material to copy the conventional host-dopant type emitting layer. The exciplexes generated between the p-type material and n-type material were dispersed in the n-type material. The device lifetime of the exciplex organic light-emitting diodes was extended by almost four times through control of the p-type material content by mimicking the host-dopant system. The analysis of the lifetime improvement mechanism revealed that suppression of triplet exciton loss by strong intermolecular interaction and concentration quenching was the major pathway to stabilize the exciplex devices by dispersion. Additionally, the device lifetime of the fluorescence emitter doped exciplex devices was extended by more than three times. Therefore, the exciplexes with a p-type material dispersed in the bipolar n-type material were effective to elongate the device lifetime of the exciplex based organic light-emitting diodes.

中文翻译：

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通过三重态激子工程提高基于激基复合物的有机发光二极管的寿命

摘要 通过管理激基复合物的分子间相互作用和浓度猝灭，研究了一种提高激基复合有机发光二极管器件寿命的器件方法。激基复合物由p型材料和双极n型材料组成，其中p型材料的比例小于50%，用于分散在n型材料中以复制传统的主体掺杂剂类型发射层。p型材料和n型材料之间产生的激基复合物分散在n型材料中。通过模拟主体掺杂剂系统控制 p 型材料含量，exciplex 有机发光二极管的器件寿命延长了近四倍。寿命改进机制的分析表明，通过强分子间相互作用和浓度猝灭抑制三重态激子损失是通过分散稳定激基复合器件的主要途径。此外，荧光发射器掺杂的激基复合物器件的器件寿命延长了三倍以上。因此，具有分散在双极 n 型材料中的 p 型材料的激基复合物可有效延长基于激基复合物的有机发光二极管的器件寿命。