,Organic light emitting diodes using magnesium doped organic acceptor as electron injection layer an

• 作 者: Cao Guo-Hua Qin Da-Shan Guan Min Cao Jun-Song Zeng Yi-Ping Li Jin-Min
• 机 构: Novel Materials Laboratory,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,Ch
• 出 处: 中国物理B（英文版）
• 发表日期: 2008年5期
• 关键词: organic light emitting diodes Mg:PTCDA electron injection

Organic light emitting diodes employing magnesium doped electron aceeptor 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.