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GAO Jia,DING Jun-qiao,YOU Han,FANG Jun-feng,MA Dong-ge,WANG Li-xiang,JING Xia-bin,WANG Fo-song
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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
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GAO Jia,DING Jun-qiao,YOU Han,FANG Jun-feng,MA Dong-ge,WANG Li-xiang,JING Xia-bin,WANG Fo-song. Organic Light-emitting Diodes Based on Organic Electrophosphorescent Material Doped Rare-earth Complex[J].J4, 2005, 43(05): 638-641.
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URL: http://xuebao.jlu.edu.cn/lxb/EN/
http://xuebao.jlu.edu.cn/lxb/EN/Y2005/V43/I05/638
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