Materials and structures for enhancing the performance of organic light emitting devices
    10.
    发明申请
    Materials and structures for enhancing the performance of organic light emitting devices 审中-公开
    用于增强有机发光器件性能的材料和结构

    公开(公告)号:US20050025993A1

    公开(公告)日:2005-02-03

    申请号:US10785287

    申请日:2004-02-23

    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 comprises a material that produces phosphorescent emission when a voltage is applied between the anode and the cathode. A second organic layer is disposed between the first organic layer and the cathode. The second organic layer is in direct contact with the first organic layer. The second organic layer may comprise an aromatic hydrocarbon material, comprising an aromatic non-heterocyclic hydrocarbon core optionally substituted, and wherein the substituents are the same or different, and each is selected from the group consisting of alkyl, alkenyl, alkynyl, aryl, heteroalkyl, substituted aryl, substituted heteroaryl and heterocyclic groups. The second organic layer may comprise a material having a molecular 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 luminance of about 100 to about 1000 cd/m2. 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.

    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。 第一有机层包括当在阳极和阴极之间施加电压时产生磷光发射的材料。 第二有机层设置在第一有机层和阴极之间。 第二有机层与第一有机层直接接触。 第二有机层可以包括芳族烃材料,其包含任选取代的芳族非杂环烃核心,并且其中取代基相同或不同,并且各自选自烷基,烯基,炔基,芳基,杂烷基 取代的芳基,取代的杂芳基和杂环基。 第二有机层可以包括具有小于约2.0德拜兹的分子偶极矩的材料,使得该器件在初始亮度约为约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 100至约1000cd / m 2。 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。