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

• 来源期刊: 中国物理B（英文版）
• 关键词: organic light emitting diodes Mg:PTCDA electron injection
• 年，卷（期）: 2008,（5）
• 页码范围: 1911-1915
• 页数: 5页
• 语种: 英文

摘要

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.