A novel triplet exciton guiding mixed host managing triplet exciton-polaron annihilation by separating the triplet excitons and polarons in the different host was developed. A high triplet energy/narrow gap host and a low triplet energy/wide gap host were mixed to isolate the triplet excitons and polarons, which could improve the extrapolated lifetime of the phosphorescent organic light emitting diodes by more than twice. The triplet exciton-polaron annihilation reducing mechanism was confirmed by triplet energy transfer, single carrier device test and triplet exciton-polaron annihilation rate constant study of the singlet host and mixed host.

中文翻译：

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新型三重态激子导向混合主体的设计，以提高磷光有机发光二极管的寿命

开发了一种新颖的三重态激子，它通过在不同主体中分离三重态激子和极化子来控制三重态激子-极化子an灭。混合高三重态能量/窄间隙主体和低三重态能量/宽间隙主体，以隔离三重态激子和极化子，这可以将磷光有机发光二极管的外推寿命提高两倍以上。通过三重态能量转移，单载流子装置测试和单重态主体和混合主体的三重态激子-极化子an灭率常数研究，证实了三重态激子-极化子an灭的减少机理。