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Chin. Phys. B, 2008, Vol. 17(5): 1911-1915    DOI: 10.1088/1674-1056/17/5/061
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Organic light emitting diodes using magnesium doped organic acceptor as electron injection layer and silver as cathode

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)
Novel Materials Laboratory, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
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.
Keywords:  organic light emitting diodes      Mg:PTCDA      electron injection  
Received:  11 August 2007      Revised:  17 October 2007      Accepted manuscript online: 
PACS:  85.60.Jb (Light-emitting devices)  
  85.60.Bt (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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