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    • 47. 发明授权
    • Organic electric field light-emitting element
    • 有机电场发光元件
    • US08294361B2
    • 2012-10-23
    • US13006746
    • 2011-01-14
    • Kensuke MasuiWataru Sotoyama
    • Kensuke MasuiWataru Sotoyama
    • H01J1/62
    • H01L51/5016H01L51/5004H01L2251/552
    • An organic electric field light-emitting element, containing an anode; a cathode; and an organic layer provided therebetween and containing a first organic layer, a second organic layer and a third organic layer laminated in this order from the anode side, wherein the first organic layer contains a first host material in an amount of 10 to 90 mass % and a first hole-transporting phosphorescent material in an amount of 10 to 90 mass %; the second organic layer contains a second host material in an amount of 65 to 96.9 mass %, a second hole-transporting phosphorescent material in an amount of 3 to 30 mass %, and an electron-trapping material in an amount of 0.1 to 5 mass %; the third organic layer contain a hole-blocking material whose T1 is higher than that of the second hole-transporting phosphorescent material by at least 0.1 eV, wherein the second host material, the second hole-transporting phosphorescent material, and the electron-trapping material satisfy the following relationship: |HOMOt2|>|HOMOh2| |HOMOt2|>|HOMOp2| |LUMOh2|+0.25 eV
    • 一种含有阳极的有机电场发光元件; 阴极 并且在其间设置有含有从阳极侧依次层叠的第一有机层,第二有机层和第三有机层的有机层,其中,所述第一有机层含有10〜90质量%的第一主体材料, 和第一空穴传输磷光材料,其量为10〜90质量% 第二有机层含有65〜96.9质量%的第二主体材料,3〜30质量%的第二空穴传输性磷光发光材料和0.1〜5质量%的电子捕获材料 %; 所述第三有机层含有T1比所述第二空穴传输性磷光发光材料的Ti高至少0.1eV的空穴阻挡材料,其中所述第二主体材料,所述第二空穴传输性磷光材料和所述电子捕获材料 满足以下关系:| HOMOt2 |> | HOMOh2 | | HOMOt2 |> | HOMOp2 | | LUMOh2 | +0.25 eV <| LUMOt2 | | LUMOp2 | +0.25 eV <| LUMOt2 | 并且其中所述第一和第二有机层的总平均厚度为至少40nm。