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电磷光材料掺杂稀土配合物的有机发光二极管

高佳,丁军桥,游汉,方俊锋,马东阁,王利祥,景遐斌,王佛松   

  1. (中国科学院长春应用化学研究所高分子物理与化学国家重点实验室,长春130022)
  • 收稿日期:2005-04-07 修回日期:1900-01-01 出版日期:2005-09-26 发布日期:2005-09-26
  • 通讯作者: 马东阁

Organic Light-emitting Diodes Based on Organic Electrophosphorescent Material Doped Rare-earth Complex

GAO Jia,DING Jun-qiao,YOU Han,FANG Jun-feng,MA Dong-ge,WANG Li-xiang,JING Xia-bin,WANG Fo-song   

  1. (State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun130022,China)
  • Received:2005-04-07 Revised:1900-01-01 Online:2005-09-26 Published:2005-09-26
  • Contact: MA Dong-ge

摘要: 以有机配合物(PPQ)2Ir(acac)为发光掺杂剂,稀土配合物Tb(eb-PMIP)3(TPPO)为主体材料,用铟锡氧化物(ITO)和铝分别作正负电极,采用真空蒸镀制备电磷光有机发光二极管.该器件发射红色光,主峰位于615nm,是磷光分子(PPQ)2Ir(acac)的特征发射通过器件结构和浓度优化,器件的最大发光效率达3.14cd/A,在较高的电流密度下,该器件的电致发光效率无明显衰减.实验结果表明,带有相对较宽能隙配体的稀土配合物可能是制备高电流密度且稳定的电磷光有机发光二极管较好的主体材料.

关键词: 有机电磷光, 稀土配合物, 发光二极管, T-T淬灭

Abstract: This paper covers organic electrophosphorescent light-emitting diodes with organic phosphorescent compound (PPQ)2Ir(acac)as dopant and rare-earth complex Tb(eb-PMIP)3(TPPO)as host.The devices were fabricated via vacuum evaporation with indium-tin-oxide as an anode and LiF/Al as a cathode.A red light with a peak at 615nm was observed,the characteristic emission from the triplet state of (PPQ)2Ir(acac).A maximum emissive efficiency of 3.14cd/A was obtained by optimizing device structure and the dopant content.The experimental results demonstrate that rare-earth complexes with wider band gap ligands may be promising materials as host in highly stable organic electrophosphorescent light-emitting diodes.

Key words: organic electrophosphorescence, rare-earth complex, light-emitting diode, T-T annihilation

中图分类号: 

  • TN304.3