Efficient Non‐Doped Blue Electro‐fluorescence with Boosted and Balanced Carrier Mobilities
作者:Runze Wang、Tengyue Li、Chaoke Liu、Mingliang Xie、Huayi Zhou、Qikun Sun、Bing Yang、Shi‐Tong Zhang、Shanfeng Xue、Wenjun Yang
DOI:10.1002/adfm.202201143
日期:2022.6
(OLED) is the highly efficient blue-emissive material, which demands both excellent photoluminescent quantum yield (PLQY) and balanced carrier mobilities. Herein, a series of blue-emissive donor–π–acceptor (D–π–A) materials with fluorene π-bridge and their D–A analogues are synthesized and discovered with a theoretical combined experimental method. Based on the excellent electron mobility of the oxadiazole
有机发光二极管 (OLED) 最重要的问题之一是高效的蓝光发射材料,它需要出色的光致发光量子产率 (PLQY) 和平衡的载流子迁移率。在此,采用理论结合实验方法合成并发现了一系列具有芴π-桥的蓝色发射供体-π-受体(D-π-A)材料及其D-A类似物。基于恶二唑(OXZ)受体优异的电子迁移率,进一步证明了芴π桥的插入不仅有助于形成具有高PLQY的杂化局部和电荷转移激发态,而且通过增强的分子间面对面堆叠来提高空穴迁移率。因此,-5和6.60 × 10 -5 cm 2 V -1 s -1分别是未掺杂蓝色荧光OLED的最佳结果。