Department of Materials Science and Engineering, Arizona State University, Tempe, AZ, 85284, USA.
Adv Mater. 2014 May;26(18):2931-6. doi: 10.1002/adma.201305507. Epub 2014 Jan 25.
Using a single tetradentate platinum emitter dubbed Pt7O7, efficient and stable white organic light-emitting diodes are developed. The excimer-based white devices achieve an external quantum efficiency (EQE) of 24.5%, coordinates of (0.37, 0.42) based on the Commission internationale de l'éclairage (CIE) system, and a color rendering index (CRI) of 70. Moreover, devices of Pt7O7 in a stable structure demonstrate operational lifetimes (50% initial luminance) of 36 h at an elevated driving current of 20 mA cm2, which corresponds to over 10,000 h at 100 cd m2.
使用一种称为 Pt7O7 的单四齿配体铂发射器，开发出高效稳定的白色有机发光二极管。基于激基复合物的白色器件实现了 24.5%的外量子效率（EQE），基于国际照明委员会（CIE）系统的坐标为（0.37，0.42），显色指数（CRI）为 70。此外，Pt7O7 的稳定结构器件在 20 mA cm2 的升高驱动电流下表现出 36 h 的工作寿命（初始亮度的 50%），这相当于在 100 cd m2 下超过 10,000 h。
