电致发光类湿法小分子材料研究进展

Progress of Solution-Processable Small Molecular Materials for Organic Light Emitting Diodes

经过20年的发展,真空蒸镀和溶液法制备有机发光二极管的方法已经取得了巨大的进步。相对于依赖真空蒸镀成膜的有机小分子材料,可溶液法加工的小分子材料能够降低器件制作成本,适合于制作大面积光电器件。同时,小分子材料可以较为明确的给出分子结构与光电性能的构效关系,因此湿法成膜制备的小分子OLEDs越来越受到人们关注。综述了近期可湿法成膜的小分子材料设计理念、合成方法以及具体应用,讨论了实现全湿法小分子OLEDs所面临的挑战以及解决方法。

After 50 years of development, significant progress has been made in the development of organic light-emitting diodes （ OLEDs）, which can be fabricated via both vacuum deposition and solution processes. Recently, solution processed small molecular OLEDs are drawing more and more research attention, as such a technology combines advantages of the facile synthesis of small molecules and the low-cost solution process like polymers. In addition, small molecular mate- rials can more clearly give the structure-activity relationships between the molecular structure and photoelectric properties. This review presents some recent developments in the design, synthesis and applications of organic solution-processable small materials, and discusses the challenge and solutions of achieving all-solution process small molecular OLEDs.