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    • 3. 发明授权
    • Electroluminescent device
    • 电致发光器件
    • US06384528B1
    • 2002-05-07
    • US09196983
    • 1998-11-20
    • Richard Henry FriendKarl PichlerDavid John Lacey
    • Richard Henry FriendKarl PichlerDavid John Lacey
    • H05B3300
    • H01L51/5012H01L51/0035H01L51/0036H01L51/0039H01L51/004H01L51/005H01L51/0052
    • An electroluminescent device comprising: a first charge-carrier injecting layer for injecting positive charge-carriers; a second charge-carrier injecting layer for injecting negative charge-carriers; a layer of a first organic material located between the charge-carrier injecting layers; and located between the layer of a first organic material and one of the charge-carrier injecting layers: a first light-emissive region comprising a light-emissive second organic material having an energy-gap less than that of the first organic material; and a second light-emissive region comprising a first component of a light-emissive third organic material having an energy-gap greater than that of the first organic material, and a second component having at least one energy level off-set from that of the first component; such that when charge-carriers are injected in the first region by the charge-carrier injecting layers light is emitted principally from the second organic material and when charge-carriers are injected in the second region by the charge-carrier injecting layers light is emitted principally from the third organic material.
    • 一种电致发光器件,包括:用于注入正电荷载流子的第一电荷载流子注入层; 用于注入负电荷载体的第二电荷载流子注入层; 位于电荷载流子注入层之间的第一有机材料层; 并且位于第一有机材料层和电荷载流子注入层之一之间:第一发光区域,其包含具有小于第一有机材料的能隙的发光第二有机材料; 以及第二发光区域,其包括具有大于所述第一有机材料的能隙的能量间隙的发光第三有机材料的第一组分,以及第二组分,其具有与所述第一有机材料的至少一个能级偏离 第一部分; 使得当电荷载流子通过电荷载流子注入层注入第一区域时,主要从第二有机材料发射光,并且当电荷载流子通过电荷载流子注入层注入第二区域时,主要发射光 从第三有机材料。