Abstract 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.
Received: 11 August 2007
Revised: 17 October 2007
Accepted manuscript online:
(Optoelectronic device characterization, design, and modeling)
Cite this article:
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) Organic light emitting diodes using magnesium doped organic acceptor as electron injection layer and silver as cathode 2008 Chin. Phys. B 17 1911
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