作　　者： ; ; ; ; ; ; ;

机构地区： 吉林师范大学信息技术学院

出　　处： 《吉林师范大学学报（自然科学版）》 2011年第2期17-19,24,共4页

摘　　要： 通过利用ADN发光材料和其他各有机发光材料之间的能级关系设计了利用BCP作为空穴阻挡层,Alq3:DCJTB层和Alq3:DCJTB层之间的ADN层为发光层的三种结构的器件.实验结果表明,在NPB层和Alq3:DCJTB层之间不插入ADN,只在Alq3:DCJTB层和BCP层之间插入ADN的器件A的性能最好.其原因在于利用了NPB和发光层之间的LUMO能级较高的势垒限制了电子的迁移和输运,改善了激子的形成几率,促进了白光的形成.该器件的启亮电压为5 V,当外加电压达到17 V时,器件最大发光亮度达12 450 cd/m2.最大效率是1.733 cd/A. We have designed and fabricated three different structure devices which made use of the energy level relation of ADN and other luminescent materials,while BCP acts as hole-blocking layer and ADN acts as light-emitting layer between two Alq3：DCJTB layers.The experiments demonstrate that the performance of device A which structure is that ADN acts between Alq3：DCJTB and BCP while no ADN acts between NPB and Alq3：DCJTB is the best in the devices.The reason is that electron transport is restrained via the higher barrier of LUMO between NPB and light-emitting layer.Therefore it improves the formation probability of excitons and promotes to emit white light.The voltage of start lighting is 5 V and when the drive voltage reaches 17 V the maximum luminance of device A reaches 12 450 cd/m2,and the maximum current efficiency is 1.733 cd/A.

关 键 词： 有机电致发光器件 载流子 势垒

领　　域： [电子电信]