Highly Efficient Electrofluorescence Material Based on Pure Organic Phosphor Sensitization**,Angewandte Chemie International Edition

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Highly Efficient Electrofluorescence Material Based on Pure Organic Phosphor Sensitization**
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-04-26 , DOI: 10.1002/anie.202104755
Jiaxuan Wang ₁ , Baoyan Liang ₂ , Jinbei Wei ₁ , Zhiqiang Li ₂ , Yincai Xu ₁ , Tong Yang ₁ , Chenglong Li ₁ , Yue Wang _{1,

2}

Affiliation

Pure organic room-temperature phosphorescence (RTP) materials are considered as potential candidates for replacing precious metal complexes to fabricate highly efficient organic light-emitting devices (OLEDs). However, applications of the reported RTP materials in OLEDs are seriously impeded by their low photoluminescence quantum yields (PLQYs) in a thin film state. To overcome these obstacles, we established a new strategy to construct highly efficient OLEDs based on a pure organic RTP material sensitized fluorescence emitter by selecting benzimidazole-triazine molecules (PIM-TRZ), 2,6-di(phenothiazinyl)naphthalene (β-DPTZN), and 5,6,11,12-tetraphenylnaphthacene (rubrene) as host, phosphor sensitizer, and fluorescent emitter, respectively. The perfect combination of host, phosphorescent sensitizer, and fluorescent emitter in the emitting layer ensure the outstanding performance of the devices with an external quantum efficiency (EQE) of 15.7 %.

中文翻译：

基于纯有机磷光敏化的高效电荧光材料**

纯有机室温磷光 (RTP) 材料被认为是替代贵金属配合物以制造高效有机发光器件 (OLED) 的潜在候选材料。然而，所报道的 RTP 材料在薄膜状态下的低光致发光量子产率 (PLQY) 严重阻碍了其在 OLED 中的应用。为了克服这些障碍，我们通过选择苯并咪唑-三嗪分子（PIM-TRZ）、2,6-二（吩噻嗪基）萘（β-DPTZN），建立了一种基于纯有机RTP材料敏化荧光发射器构建高效OLED的新策略。 ) 和 5,6,11,12-四苯基萘（红荧烯）分别作为主体、磷光体敏化剂和荧光发射体。宿主、磷光增感剂的完美结合，

更新日期：2021-06-28

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