Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Department of Chemistry, Wuhan University, Wuhan, 430072, People's Republic of China.
Chem Soc Rev. 2014 Sep 7;43(17):6439-69. doi: 10.1039/c4cs00110a.
Owing to the electron spin-orbit coupling (SOC) and fast intersystem crossing (ISC), heavy-metal complexes (such as iridium(III), platinum(II) and osmium(II) complexes, etc.) are phosphorescent emitters at room temperature. Since 1998, heavy-metal complexes as phosphors have received considerable academic and industrial attention in the field of organic light-emitting diodes (OLEDs), because they can harvest both the singlet (25%) and triplet (75%) excitons for emission during the electro-generated processes. Among all the visible colors (blue, green, yellow, orange and red), the yellow/orange heavy-metal complexes play an important role for realizing full-color OLEDs as well as high-efficiency white OLEDs, and thus the development of highly efficient yellow/orange heavy-metal complexes is a pressing concern. In this article, we will review the progress on yellow/orange heavy-metal complexes as phosphors in OLEDs. The general principles and useful tactics for designing the yellow/orange heavy-metal complexes will be systematically summarized. The structure-property relationship and electrophosphorescence performance of the yellow/orange heavy-metal complexes in monochromatic phosphorescent OLEDs (PhOLEDs) and white OLEDs (WOLEDs) will be comprehensively surveyed and discussed.
由于电子自旋轨道耦合（SOC）和快速系间窜越（ISC），重金属配合物（如铱（III）、铂（II）和锇（II）配合物等）在室温下为磷光体。自 1998 年以来，重金属配合物作为磷光体在有机发光二极管（OLED）领域引起了相当多的学术和工业关注，因为它们可以在电生成过程中收集单重态（25%）和三重态（75%）激子进行发射。在所有可见颜色（蓝色、绿色、黄色、橙色和红色）中，黄色/橙色重金属配合物对于实现全彩色 OLED 和高效白色 OLED 非常重要，因此开发高效的黄色/橙色重金属配合物迫在眉睫。本文将综述 OLED 中黄色/橙色重金属配合物作为磷光体的进展。将系统总结设计黄色/橙色重金属配合物的一般原则和有用策略。将综合调查和讨论黄色/橙色重金属配合物在单色磷光 OLED（PhOLED）和白色 OLED（WOLED）中的结构-性质关系和电磷光性能。
