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    Materials and structures for enhancing the performance or organic light emitting devices
    1.
    发明授权
    Materials and structures for enhancing the performance or organic light emitting devices 有权
    用于增强性能的材料和结构或有机发光器件

    公开(公告)号：US06902833B2

    公开(公告)日：2005-06-07

    申请号：US10405009

    申请日：2003-04-01

    申请人： Mark E. Thompson ,  Simona Garon ,  Raymond Kwong ,  Jason Brooks ,  Min-Hao Michael Lu

    发明人： Mark E. Thompson ,  Simona Garon ,  Raymond Kwong ,  Jason Brooks ,  Min-Hao Michael Lu

    IPC分类号： C09K11/06 ,  H01L51/00 ,  H01L51/10 ,  H01L51/30 ,  H01L51/50 ,  H05B33/12 ,  H05B33/14

    CPC分类号： H05B33/14 ,  C09K11/06 ,  C09K2211/1029 ,  C09K2211/183 ,  C09K2211/188 ,  H01L51/0052 ,  H01L51/0059 ,  H01L51/0062 ,  H01L51/0077 ,  H01L51/0078 ,  H01L51/0085 ,  H01L51/5016 ,  H01L51/5048 ,  H01L51/5092 ,  H01L51/5096 ,  Y10S428/917 ,  Y10T428/24942

    摘要： A device is provided, having an anode, a cathode, and a first organic layer disposed between the anode and the cathode. The first organic layer is capable of phosphorescent emissive when a voltage is applied between the anode and the cathode. A second organic layer disposed between the first organic layer and the cathode is also provided. The second organic layer is in direct contact with the first organic layer. The second organic layer may comprise a material having the structure: M may be selected from the group Ti, Zr, Hf, Nb, Re, Sn and Ge. The substituents R1 through R10 may be selected from the group consisting of alkyl and aryl groups. Each of R1 through R10 may represent no substitution, mono-, di-, or tri-substitution. The second organic layer may comprise a material having a dipole moment less than about 2.0 debyes, such that the device has an unmodified external quantum efficiency of at least about 3% and a lifetime of at least about 1000 hours at an initial photon flux of about 1018 photons/sr-sec. The second organic layer may comprise a metal complex having a plurality of ligands, wherein each ligand makes the same contribution to the highest occupied molecular orbital and the lowest unoccupied molecular orbital of the metal complex. The second organic layer may be in direct contact with the cathode, or there may be a separate organic layer between the second organic layer and the cathode. Other metal complexes having quinolate ligands may be used.

    摘要翻译： 提供一种具有阳极，阴极和设置在阳极和阴极之间的第一有机层的器件。 当在阳极和阴极之间施加电压时，第一有机层能够发磷光。 还提供了设置在第一有机层和阴极之间的第二有机层。 第二有机层与第一有机层直接接触。 第二有机层可以包括具有以下结构的材料：M可以选自Ti，Zr，Hf，Nb，Re，Sn和Ge组。 取代基R 1至R 10可以选自烷基和芳基。 R 1至R 10中的每一个可以不表示取代，单取代，二取代或三取代。 第二有机层可以包括具有小于约2.0德拜的偶极矩的材料，使得该器件在初始光子通量约为约3％时具有至少约3％的未修饰的外量子效率和至少约1000小时的寿命 10个光子/ sr-sec。 第二有机层可以包含具有多个配体的金属络合物，其中每个配体对金属络合物的最高占据分子轨道和最低未占据的分子轨道具有相同的贡献。 第二有机层可以与阴极直接接触，或者在第二有机层和阴极之间可以存在单独的有机层。 可以使用具有喹啉配体的其它金属络合物。