School of Physics and Optoelectronic Engineering, Foshan University, Foshan 528000, China.
LUMINOUS! Centre of Excellent for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Singapore.
Molecules. 2019 Jan 2;24(1):151. doi: 10.3390/molecules24010151.
Tandem white organic light-emitting diodes (WOLEDs) are promising for the lighting and displays field since their current efficiency, external quantum efficiency and lifetime can be strikingly enhanced compared with single-unit devices. In this invited review, we have firstly described fundamental concepts of tandem device architectures and their use in WOLEDs. Then, we have summarized the state-of-the-art strategies to achieve high-performance tandem WOLEDs in recent years. Specifically, we have highlighted the developments in the four types of tandem WOLEDs (i.e., tandem fluorescent WOLEDs, tandem phosphorescent WOLEDs, tandem thermally activated delayed fluorescent WOLEDs, and tandem hybrid WOLEDs). Furthermore, we have introduced doping-free tandem WOLEDs. In the end, we have given an outlook for the future development of tandem WOLEDs.
串联式白色有机发光二极管(WOLED)在照明和显示领域具有广阔的应用前景,因为与单一组件的器件相比,它们的电流效率、外量子效率和寿命可以得到显著提高。在这篇特邀综述中,我们首先描述了串联器件结构的基本概念及其在 WOLED 中的应用。然后,我们总结了近年来实现高性能串联 WOLED 的最新策略。具体来说,我们重点介绍了四种类型的串联 WOLED(即串联荧光 WOLED、串联磷光 WOLED、串联热激活延迟荧光 WOLED 和串联混合 WOLED)的发展情况。此外,我们还介绍了无掺杂串联 WOLED。最后,我们对串联 WOLED 的未来发展进行了展望。