,Organic Light-Emitting Diodes with Magnesium Doped CuPc as an Efficient Electron Injection Layer

• 作 者: CAO Jun-Song GUAN Min CAO Guo-Hua ZENG Yi-Ping LI Jin-Min QIN Da-Shan
• 机 构: Novel Materials Laboratory,Institute of Semiconductors,Chinese Academy of Sciences,PO Box 912,Beijin
• 出 处: 中国物理快报(英文版)
• 发表日期: 2008年2期

Bright organic electroluminescent devices axe developed using a metal-doped organic layer intervening between the cathode and the emitting layer.The typical device structure is a glass substrate/indium-tin oxide (ITO)/copper phthalocyanine (CuPc)/N,N-bis-(1-naphthl)-diphenyl-1,1-biphenyl-4,4-diamine (NPB)/Tris(8-quinolinolato) aluminum(Alq3)/Mg-doped CuPc/Ag.At a driving voltage of 11 V,the device with a layer of Mg-doped CuPc (1:2 in weight) shows a brightness of 4312cd/m2 and a current efficiency of 2.52cd/A,while the reference device exhibits 514 cd/m2 and 1.25 cd/A.