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本文总结了基于掺杂发光的有机电致磷光器件(PhOLED)中磷光材料被激发的途径及机理,并指出不同主体材料对器件性能的不同影响.全面介绍了小分子主体材料研究的新进展及它们在PhOLEDs器件中的运用.比较和讨论了基于各种不同性质主体材料的器件性能,指出主体材料选择策略.同时讨论了各类主体材料的分子结构、热稳定性、三线态能级、载流子迁移率及HOMO/LUMO能级之间的关系,揭示了上述特性对器件性能影响.
This paper summarizes the ways and mechanisms of phosphorescent materials excited by phosphorescent phosphors (PhOLEDs) doped with luminescence and points out the different effects of different host materials on the properties of the devices. Their applications in PhOLEDs devices are compared and discussed based on the performance of devices with different properties of host materials and the selection strategy of host materials.Meanwhile, the molecular structure, thermal stability, triplet level, The relationship between mobility and HOMO / LUMO energy levels reveals the impact of these characteristics on device performance.