稀土配合物有机电致发光器件中电致激基复合物发光性质的研究  

Emission of Electroplex in Organic Electroluminescent Devices with Rare Earth Complex

作　　者：王勇[1] 赵谡玲[1] 徐征[1] 袁广才[1] 赵德威[1] 

机构地区：[1]北京交通大学光电子技术研究所发光与光信息技术教育部重点实验室,北京100044

出　　处：《中国稀土学报》2006年第5期540-543,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金(10374001和60576016);国家重点基础研究发展计划(2003CB314707);国家自然科学基金重点项目(10434030)资助

摘　　要：以稀土配合物Tb0.5Eu0.5(thienyltrifluroacetone)3-2,2-biphenyl(简称Tb0.5Eu0.5(TTA)3Dipy)作为发光层,制备了结构为ITO/PVK∶Tb0.5Eu0.5(TTA)3Dipy/BCP/Alq3/Al的OLED发光器件,在直流电压的驱动下,发现了铕在612 nm处的特征发射和PVK在410 nm处的发光。此外,还观察到了位于490 nm处的新的发光峰。通过改变不同的器件结构,分析研究了新的发光峰的性质,认为新的发光来自于稀土配合物的配体和BCP之间相互作用形成的电致激基复合物。A novel organic electroluminescent device was made with the structure of ITO/PVK ：Tb0.5Eu0.5 （TTA）3Dipy/BCP/A1Q/AI（a）, which used the rare earth complex Tb0.5Eu0.8（TTA）3Dipy as the emitting layer, When it is driven by the direct current, the 612 nm emission of the Eu^3＋ and the 410 nm emission of PVK were observed. In addition, in the EL spectrum a new peak at 490 nm appeared. Through the analysis of the different devices, the mechanism of the new emission was studied. It is concluded that the new emission is the electroplex originating from the interface between the ligand （TTA）3Dipy and BCP.

关 键 词：电致发光 配体 电致激基复合物 稀土配合物 

分 类 号：O482.31[理学—固体物理]