ORGANIC ELECTROLUMINESCENT ELEMENT AND ORGANIC ELECTROLUMINESCENT DEVICE
    9.
    发明申请
    ORGANIC ELECTROLUMINESCENT ELEMENT AND ORGANIC ELECTROLUMINESCENT DEVICE 有权
    有机电致发光元件和有机电致发光器件

    公开(公告)号:US20140246660A1

    公开(公告)日:2014-09-04

    申请号:US14273992

    申请日:2014-05-09

    IPC分类号: H01L27/32 H01L51/52

    摘要: The objection of invention is to provide an organic electroluminescent element having an excellent current-voltage property. The organic electroluminescent element of the invention comprises an anode, a light emitting layer and a cathode, in this order, wherein a total number of kinds of an electron transport material and a light emitting material contained in the light emitting layer is five or more. Preferably, a total number of kinds of an electron transport material contained in the light emitting layer is four or more, and at least one of an ionization potential and an electron affinity of three kinds or more of the electron transport materials contained in the light emitting layer is different from each other.

    摘要翻译: 本发明的目的是提供具有优异的电流 - 电压特性的有机电致发光元件。 本发明的有机电致发光元件依次包括阳极,发光层和阴极,其中包含在发光层中的电子传输材料和发光材料的总数为5以上。 优选地,包含在发光层中的电子传输材料的种类总数为四个或更多个,并且发光层中包含的电子传输材料中的三种或更多种的电离电位和电子亲和力中的至少一种 层是彼此不同的。