一种新型金属配合物有机电致发光器件  

Studies on a New Type of Metal Chelate OLED

作　　者：郑加金[1] 华玉林[1] 吴晓明[1] 冯秀岚[1] 王树国[1] 孙媛媛[1] 徐风波[2] 张正之[2] 

机构地区：[1]天津理工学院材料物理研究所,天津300191 [2]南开大学元素所,天津300071

出　　处：《光电子．激光》2005年第1期24-27,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60276027);天津市自然科学重点基金资助项目(023800511);天津市自然科学基金资助项目(033601211);天津市高校科技发展基金资助项目(9903114);天津市"材料物理与化学"重点学科资助项目

摘　　要：以一种新型的含蒽荧光团双磷配体螯合Ag(L1Ag)为发光材料,制成有机电致发光二极管(OLEDs),结构分别为:ITO/L1Ag/Al;ITO/聚乙稀咔唑(PVK):L1Ag/Al。成功实现了明亮稳定的电致发光(EL),在534nm处均匀稳定地发出明亮的绿光。通过在L1Ag中混入空穴传输层材料聚乙烯咔唑(PVK),显著地提高了器件的综合发光性能,其光电流和量子效率分别提高了4.5倍和4.7倍,光电流达1.5×10-7A,量子效率为1.83×10-3%。对这种新型金属螯合物OLEDs的发光和电学性能进行了深入的研究。Two types of organic light-emitting devices (OLEDs) had been fabricated with a new OLEDs material L1Ag. The configuration of the devices were as follows: ITO/L1Ag/Al; ITO/PVK:L1Ag/Al. The bright and steady light emitting had been obtained, and the optical current and quantum efficiency of the later devices came to 1.5 × 10-7 A and 1.83 × 10-3%, which were 4.5 and 4.7 times higher than the former one, respectively. Details on the light-emitting characteristics of the devices were explained by the curves of current density-voltage, optical current-voltage and quantum efficiency-current density, which were measured using a quantum efficiency measure system including the keithley 485 picoammeter and 2400 source meter. Last, we also discussed the emitting mechanisms of the new material and the devices.

关 键 词：PVK 有机电致发光器件 OLED 光电流 ITO 量子效率 二极管 金属配合物 金属螯合物 聚乙烯咔唑 

分 类 号：TN383.1[电子电信—物理电子学] TN873