ORGANIC ELECTROLUMINESCENT ELEMENT, LIGHTING DEVICE AND DISPLAY DEVICE
    7.
    发明申请
    ORGANIC ELECTROLUMINESCENT ELEMENT, LIGHTING DEVICE AND DISPLAY DEVICE 审中-公开
    有机电致发光元件,照明装置和显示装置

    公开(公告)号:US20090200925A1

    公开(公告)日:2009-08-13

    申请号:US12304122

    申请日:2007-06-07

    IPC分类号: H01J1/63

    摘要: Provided is a means to obtain long lifetime of an organic EL element, and a long lifetime lighting device and a long lifetime display device utilizing the means are further provided. Disclosed is an organic electroluminescent element comprising an emission layer containing a host material and a dopant material, and a hole transport layer, provided between cathode and anode facing each other, wherein an intermediate layer is provided on an anode side of the emission layer so as to be brought into contact with the emission layer, and the hole transport layer is provided on the anode side of the intermediate layer, satisfying the following Formulae E1 E4, where E1 represents an ionization potential of a hole transport material, E2 represents an ionization potential of an intermediate material, E3 represents an ionization potential of the host material, and E4 represents an ionization potential of the dopant material.

    摘要翻译: 提供了一种获得有机EL元件的长寿命的手段,并且还提供了使用该装置的长寿命照明装置和长寿命显示装置。 公开了一种有机电致发光元件,其包括含有主体材料和掺杂剂材料的发射层和设置在阴极和阳极之间的空穴传输层,其中在发光层的阳极侧设置中间层,以便 与发射层接触,并且在中间层的阳极侧设置空穴传输层,满足以下公式E1 E4,其中E1表示孔的电离电位 传输材料,E2表示中间材料的电离电位,E3表示主体材料的电离电位,E4表示掺杂剂材料的电离电位。