中国物理B ›› 2008, Vol. 17 ›› Issue (5): 1911-1915.doi: 10.1088/1674-1056/17/5/061
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
曹国华, 秦大山, 关 敏, 曹峻松, 曾一平, 李晋闽
Cao Guo-Hua(曹国华), Qin Da-Shan(秦大山)†, Guan Min(关敏), Cao Jun-Song(曹峻松), Zeng Yi-Ping(曾一平)‡, and Li Jin-Min(李晋闽)
摘要: Organic light emitting diodes employing magnesium doped electron acceptor 3, 4, 9, 10 perylenetetracarboxylic dianhydride (Mg:PTCDA) as electron injection layer and silver as cathode were demonstrated. As compared to Mg:Ag cathode, the combination of the Mg:PTCDA layer and silver provided enhanced electron injection into tris (8-quinolinolato) aluminium. The device with 1:2 Mg:PTCDA and Ag showed an increase of about 12% in the maximum current efficiency, mainly due to the improved hole-electron balance, and an increase of about 28% in the maximum power efficiency, as compared to the control device using Mg:Ag cathode. The properties of Mg:PTCDA composites were studied as well.
中图分类号: (Light-emitting devices)