Abstract Herein, highly efficient single-emitting-layer structure pure fluorescent white organic light-emitting diodes (WOLED) were designed by employing thermally activated delayed fluorescence emitter of mSOAD as host material to sensitize traditional fluorescent dopant of Rubrene and DCJTB, respectively. The WOLED based Rubrene dopant achieve a cool white emission with maximum current efficiency, power efficiency and external quantum efficiency of 33.0 cd/A, 34.5 l m/W and 12.2%, respectively. While a warm white emission with the efficiency of 20.9 cd/A, 20.1 lm/W and 9.0%, respectively, were realized in WOLED based DCJTB dopant. The study to energy level and photoluminescence transient decay lifetime demonstrate the sufficient confinement to charges and excitons, and efficient triplet collection by host triplet exciton reverse intersystem crossing and energy transfer to dopant are the reasons of high device efficiency and stable spectra.

中文翻译：

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用于基于吖啶/砜衍生物的热激活延迟荧光主体的高效单发射层纯荧光 WOLED 的三重收集

摘要 以mSOAD的热激活延迟荧光发射体为主体材料，分别敏化传统的红荧烯和DCJTB荧光掺杂剂，设计了高效的单发光层结构纯荧光白光有机发光二极管（WOLED）。基于 WOLED 的红荧烯掺杂剂实现了冷白光发射，最大电流效率、功率效率和外量子效率分别为 33.0 cd/A、34.5 l m/W 和 12.2%。而基于 WOLED 的 DCJTB 掺杂剂实现了效率分别为 20.9 cd/A、20.1 lm/W 和 9.0% 的暖白光发射。对能级和光致发光瞬态衰变寿命的研究证明了对电荷和激子的充分限制，