Very low turn-on voltage and high brightness tris-(8-hydroxyquinoline) aluminum-based organic light-emitting diodes with a MoOx p-doping layer

被引:80
作者
Xie, Guohua [1 ]
Meng, Yanlong [1 ]
Wu, Fengmin [1 ]
Tao, Chen [1 ]
Zhang, Dandan [1 ]
Liu, Mingjun [1 ]
Xue, Qin [1 ]
Chen, Wen [1 ]
Zhao, Yi [1 ]
机构
[1] Jilin Univ, State Key Lab Integrated Optoelect, Coll Elect Sci & Engn, Changchun 130012, Peoples R China
基金
中国国家自然科学基金;
关键词
D O I
10.1063/1.2890490
中图分类号
O59 [应用物理学];
学科分类号
摘要
We have demonstrated an organic light-emitting diode based on molybdenum oxide (MoOx) doped 4,4('),4('')-tris(3-methylphenylphenylamino)triphenylamine (m-MTDATA) as a p-type doping hole injection layer. The tris-(8-hydroxyquinoline) aluminum (Alq(3))-based organic light-emitting diodes show high brightness at very low operating voltage, 100 cd/m(2) at 3.2 V and 1000 cd/m(2) at 4.4 V, corresponding to a low turn-on voltage of 2.4 V. Such improved properties are attributed to the formation of the charge transfer complex produced by doping MoOx into m-MTDATA, which provides much more free hole carriers, and the introduction of an efficient electron-injecting layer to improve the performance. (c) 2008 American Institute of Physics.
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页数:3
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