作　　者： ; ; ;

机构地区： 江苏大学材料科学与工程学院

出　　处： 《吉林大学学报（工学版）》 2011年第3期787-790,共4页

摘　　要： 研究了母体中磷光客体材料的浓度对红色有机发光器件内载流子传输性能的影响。采用(1-Phenylisoquinoline)iridium(III)为客体材料,使母、客体能级匹配,载流子同时通过母体和客体进行传输,从而制备了具有混合母体结构的红色磷光器件。当客体掺杂质量分数为4%,色度坐标为(0.67,0.33),亮度为100cd/cm2时,功率效率为9.3lm/W,外量子效率为14.3%。 In this paper, we demonstrated that controlled host-dopant concentration is essential for charge carriers-transporting in red phosphorescent organic light emitting device （PHOLEDs）. Carriers transport via （1-Phenylisoquinoline） iridium （Ⅲ） dopant molecules in the emitting layer with single host, while, via both dopant and host molecules when their energy levels are well aligned. Conditions for reduction of driving voltage and enhanced efficiency of red PHOLED were obtained with mixed host structure. A pure red PHOLED with color coordinates of （0. 67, 0.33） has been realized by using only 4 wt% emissive dopant, The device achieves 100 cd/cm^2 at 2. 9 V, with corresponding power efficiency of 9.3 lm/W and external quantum efficiency of 14.3%.

关 键 词： 半导体技术 材料科学 红色磷光 混合母体 载流子传输

领　　域： [电子电信]