使用苯基蒽醌衍生物作为主体的低能耗磷光有机发光二极管，具有双极和热激活延迟荧光特性。
Low energy consumption phosphorescent organic light-emitting diodes using phenyl anthracenone derivatives as the host featuring bipolar and thermally activated delayed fluorescence.
作者信息
Ye Zhonghua, Ling Zhitian, Chen Minyu, Yang Jiali, Wang Shuanglong, Zheng Yanqiong, Wei Bin, Li Chong, Chen Guo, Shi Ying
机构信息
School of Materials Science and Engineering, Shanghai University Shanghai 200072 P. R. China
Key Laboratory of Advanced Display and System Applications, Ministry of Education, Shanghai University 149 Yanchang Road Shanghai 200072 P. R. China
出版信息
RSC Adv. 2019 Feb 27;9(12):6881-6889. doi: 10.1039/c8ra10658d. eCollection 2019 Feb 22.
A novel host material featuring the characteristics of bipolarity and thermally activated delayed fluorescence, 10-(4-(5,5-dimethylbenzofuro[3,2-]acridin-13(5)-yl)phenyl)-10-phenylanthracen-9(10)-one (DphAn-5BzAc), has been designed and synthesized. By employing this material as the host of green emitter Ir(ppy)acac, we have fabricated phosphorescent organic light-emitting diodes (PhOLEDs) with two hosting schemes, which are the single host system consisting of DhAn-5BzAc and the co-host system with 1,3-bis(carbazolyl)benzene (mCP). We found that the co-host based PhOLED achieved very low energy consumption values at high brightnesses, which were only 0.5, 5.9 and 94.0 mW m at 100, 1000 and 10 000 cd m, respectively. The extremely low energy consumption for DhAn-based PhOLEDs were attributed to the excellent bipolar transport properties and thermally activated delayed fluorescence characteristics.
一种具有双极性和热激活延迟荧光特性的新型主体材料10-(4-(5,5-二甲基苯并呋喃[3,2-]吖啶-13(5)-基)苯基)-10-苯基蒽-9(10)-酮（DphAn-5BzAc）已被设计并合成。通过将这种材料用作绿色发光体Ir(ppy)acac的主体，我们制备了具有两种主体方案的磷光有机发光二极管（PhOLED），即由DhAn-5BzAc组成的单主体系统和与1,3-双（咔唑基）苯（mCP）的共主体系统。我们发现，基于共主体的PhOLED在高亮度下实现了非常低的能耗值，在100、1000和10000 cd/m²时分别仅为0.5、5.9和94.0 mW/m²。基于DhAn的PhOLED极低的能耗归因于其优异的双极性传输特性和热激活延迟荧光特性。
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