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    • 5. 发明申请
    • POLYMERIC ELECTROLUMINESCENT DEVICE AND METHOD FOR PREPARING SAME
    • 聚合电致发光器件及其制备方法
    • US20140332788A1
    • 2014-11-13
    • US14360923
    • 2011-11-28
    • Mingjie ZhouPing WangHui HuangLusheng Liang
    • Mingjie ZhouPing WangHui HuangLusheng Liang
    • H01L51/00H01L51/56
    • H01L51/0038H01L51/5084H01L51/5096H01L51/56
    • The present invention relates to a polymeric electroluminescent device and a method for preparing the same. The device comprises a conductive anode substrate, a hole injecting layer, a hole transportation layer, an electron barrier layer, a light-emitting layer, an electron transportation layer, an electron injecting layer and a cathode laminated in succession, and the material for the electron barrier layer is one selected from lithium fluoride, lithium carbonate, lithium oxide and lithium chloride. By preparing lithium compound as an inorganic electron barrier layer, the polymeric electroluminescent device is made of cheap materials which are easily obtainable, and most importantly has a low work function of approximately 2.0 eV, which can form a transition potential barrier of approximately 1.0 eV with the light-emitting layer and can limit the recombination of electrons and holes as far as possible, thereby increasing the recombination possibility of excitons and in turn improving the light-emitting efficiency of the polymeric electroluminescent device.
    • 本发明涉及聚合物电致发光器件及其制备方法。 该装置包括导电阳极基板,空穴注入层,空穴传输层,电子势垒层,发光层,电子传输层,电子注入层和阴极层叠的材料, 电子势垒层是选自氟化锂,碳酸锂,氧化锂和氯化锂中的一种。 通过制备作为无机电子阻挡层的锂化合物,聚合物电致发光器件由易于获得的廉价材料制成,最重要的是具有约2.0eV的低功函数,其可以形成约1.0eV的跃迁势垒, 并且可以尽可能地限制电子和空穴的复合,从而增加激子的复合可能性,从而提高聚合物电致发光器件的发光效率。