一种新型磷光材料的电致发光特性研究  

Study on electroluminescence characteristic of a new phosphorescent materials

作　　者：张迪[1] 杨刚[1] 文雯[1] 李璐[1] 于军胜[1] 蒋泉[1] 王军[1] 钟建[1] 朱凤稚[1] 骆开均[2] 谢运[2] 徐玲玲[2] 

机构地区：[1]电子科技大学光电信息学院四川省显示科学与技术重点实验室,四川成都610054 [2]四川师范大学化学与材料学院,四川成都610081

出　　处：《光电子．激光》2009年第6期754-757,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(20472060)

摘　　要：设计与合成了一种基于Pt配合物的新型磷光材料(ppy)Pt(bcam),用其制备了相应的磷光器件,器件的结构为ITO/NPB(50 nm)/CBP(15 nm)/(ppy)Pt(bcam)(0.3-2.0 nm)/CBP(15 nm)/BCP(10 nm)/Alq3(20 nm)/Mg:Ag(200 nm),并对器件的相关特性进行了研究。(ppy)Pt(bcam)磷光器件的最大发光波长为625 nm,器件的最大发光波长随驱动电压变化很小,显示了该器件磷光特性非常稳定;磷光发光层厚度为0.5 nm在驱动电压为24.25 V时亮度达到8 755 cd/m2,电流密度为499 A/m2时得到最大的电流效率3.33 cd/A。A new phosphorescent material based on the platinum complex has been synthesized. The phosphorescent devices have been fabricated by adopting the ultrathin film technology. The device structure is ITO/NPB（50 nm）/CBP（15 nm）/（ppy）Pt（bcam）（0. 3-2.0 nm）/CBP（15 nm）/BCP（10 nm）/ Alq（20 nm）/Mg：Ag（200 nm）. The relative characteristics of the devices are studied. The peak at 625 nm is the emission spectrum of （ppy）pt（bcam）, and the emission spectrum of （ppy）pt（bcam） almost has no change at different driving voltage,it is obviously that the electrophosphorescent characteristics of （ppy）pt（bcam） are very stable. The highest brightness of phosphorescent device,whose phosphor layer thickness is 0.5 nm,is 8 755 cd/m2 under the driving voltage of 24.25 V, the highest current efficiency is 3.33 cd/A at the current density of 499 a/m2.

关 键 词：磷光材料 磷光器件 超薄结构 

分 类 号：TN383[电子电信—物理电子学]