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    Organic light emitting device with reverse intersystem crossing light emitting molecules
    1.
    发明授权
    Organic light emitting device with reverse intersystem crossing light emitting molecules 失效
    具有反向系统交叉发光分子的有机发光器件

    公开(公告)号：US07034454B2

    公开(公告)日：2006-04-25

    申请号：US10733294

    申请日：2003-12-12

    申请人： Tatsundo Kawai ,  Koichi Suzuki ,  Hiroshi Tanabe ,  Keiji Okinaka ,  Naoki Yamada ,  Chika Negishi ,  Akihito Saito ,  Maki Okajima

    发明人： Tatsundo Kawai ,  Koichi Suzuki ,  Hiroshi Tanabe ,  Keiji Okinaka ,  Naoki Yamada ,  Chika Negishi ,  Akihito Saito ,  Maki Okajima

    IPC分类号： H05B33/00

    CPC分类号： H05B33/14 ,  C09K11/06 ,  C09K2211/1011 ,  C09K2211/1014 ,  C09K2211/1092 ,  H01L51/0052 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0073 ,  H01L51/0074 ,  H01L51/008 ,  H01L51/0094 ,  H01L51/5012 ,  H01L2251/308

    摘要： There is provided an organic light emitting device to break through the limit of 25% of internal quantum efficiency and 5% of external quantum efficiency while using singlet luminescence. Specifically provided is an organic light emitting device comprising an anode, an organic layer and a cathode, wherein light-emitting molecules present in an emissive layer which is at least a part of the organic layer and responsible for luminescence by charge injection effect transition from a triplet excited state having an energy level higher than a lowest excited singlet state to a singlet excited state and effect fluorescent emission in a fluorescence quantum yield of 60% or more in the same state as existing in the emissive layer, and wherein the emissive layer comprises the light-emitting molecules as a main component in an amount of 50 wt % or more, or is doped with the light-emitting molecules at a high concentration of 7 wt % or more, or is a layer in which the light-emitting molecules are excitable by direct trapping of electrons and holes has enabled to break through the limit of 25% of internal quantum efficiency and 5% of external quantum efficiency while using singlet luminescence.

    摘要翻译： 提供了一种有机发光装置，在使用单线态发光的同时，突破了25％的内量子效率和5％的外量子效率。 具体提供的是包括阳极，有机层和阴极的有机发光器件，其中存在于发光层中的发光分子是发光层的至少一部分，并且通过电荷注入效应从 三重态激发态具有比最低激发单态更高于单重激发态的能级，并且在与发射层中存在的相同状态下以60％以上的荧光量子产率实现荧光发射，并且其中发射层包含 作为主成分的发光分子为50重量％以上，或以7重量％以上的高浓度掺杂发光分子，或者是发光分子 可以通过电子的直接捕获来激发，并且使用单峰可以突破25％内部量子效率和5％外部量子效率的极限 发光。