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首页> 外文期刊>ACS applied materials & interfaces >Highly Efficient Soluble Blue Delayed Fluorescent and Hyperfluorescent Organic Light-Emitting Diodes by Host Engineering
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Highly Efficient Soluble Blue Delayed Fluorescent and Hyperfluorescent Organic Light-Emitting Diodes by Host Engineering

机译：高效可溶性蓝色延迟荧光灯和较高流出有机发光二极管通过主机工程

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摘要

Solution-processed high-efficiency fluorescent organic light-emitting diodes with an external quantum efficiency over 18% were developed by engineering a host material and device structure designed for solution process. A high triplet energy host material designed for the solution process, (oxybis(3-(tert-butyl)-6,1-phenylene))bis-(diphenylphosphine oxide) (DPOBBPE), worked efficiently as the host of blue fluorescent devices because of good solubility, high photoluminescence quantum yield, and good film properties. The DPOBBPE host enabled a high external quantum efficiency of 18.8% in the fluorescent organic light-emitting diodes by the solution process. Moreover, 25.8% external quantum efficiency in the soluble blue thermally activated delayed fluorescent devices was also realized. The 25.8% external quantum efficiency of the DPOBBPE delayed fluorescent device and 18.8% external quantum efficiency of the fluorescent device are the highest efficiency values achieved in the solution-processed blue fluorescent organic light-emitting diodes. Moreover, the solution-processed fluorescent device showed an improved blue color coordinate of (0.14, 0.20) compared to (0.17, 0.31) of the delayed fluorescent device.
机译：通过工程，通过设计用于解决方案方法的主机材料和器件结构，开发了溶液加工的高效荧光有机发光二极管超过18％，以18％开发。设计用于溶液方法的高三态能量宿主材料（氧化银（叔丁基）-6,1-亚苯基））双 - （二苯基氧化膦）（DPOBBPE），有效地作为蓝色荧光装置的宿主工作，因为良好的溶解度，高光致发光量子产率和良好的薄膜性能。 DPOBBPE宿主通过溶液方法使荧光有机发光二极管的高外部量子效率为18.8％。此外，还实现了25.8％的外部量子效率，也实现了可溶性蓝色热活化延迟荧光装置中的外部量子效率。 DPOBBPE延迟荧光装置的25.8％外部量子效率和18.8％的荧光装置的外量子效率是溶液加工蓝色荧光有机发光二极管中实现的最高效率值。此外，溶液处理的荧光装置显示出（0.14,0.20）的改进的蓝色坐标，与延迟荧光装置的（0.17,0.31）相比。

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