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    • 7. 发明申请
    • ELECTROLUMINESCENT DEVICE
    • 电致发光器件
    • WO2003103067A2
    • 2003-12-11
    • PCT/IB2003/002052
    • 2003-05-28
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.BRUNNER, KlemensHOFSTRAAT, Johannes, W.DE COLA, LuisaWELTER, StevePLUMMER, E.
    • BRUNNER, KlemensHOFSTRAAT, Johannes, W.DE COLA, LuisaWELTER, StevePLUMMER, E.
    • H01L51/00
    • H01L51/0086C09B23/0025C09B23/0066C09B57/00C09B57/10H01L51/0034H01L51/0035H01L51/0039H01L51/0077H01L51/0081H01L51/0084H01L51/0085H01L51/5036
    • An electroluminescent device includes a first electrode, a second electrode and, dispersed therebetween, an electroluminescent layer comprising a first and a second electroluminescent compound capable of emitting light of a first and a second color respectively, the first color being different form the second color. The electroluminescent device is capable of reversibly emitting light having predominantly the first color when biased at a low voltage in a first direction and light having predominantly the second color when biased at a low voltage in a second direction opposite to the first direction. The first electroluminescent compound may be an electroluminescent polymer or low-molecular weight conjugated electroluminescent compound. The second electroluminescent compound is a metal-ion complex, typically mono-kernel or bi-kernel, having one or more ligands. At least one of said one or more ligands is substituted with a conjugated moiety, such as an oligo-phenylenevinylene or an oligo-phenylene derivative. The metal-ion complex is an ionic compound and has counter ions for balancing the charges of the metal ion which are capable of migrating within the electroluminescent device when the electroluminescent device is biased.
    • 电致发光器件包括第一电极和第二电极,并且在其间分散有包含第一和第二电致发光化合物的电致发光层,所述第一和第二电致发光化合物能够分别发射第一和第二颜色的光,所述第一颜色不同于第二颜色。 当在与第一方向相反的第二方向上以低电压偏压时,电致发光器件能够可逆地发射主要以第一方向的低电压偏置的第一颜色的光和主要为第二颜色的光。 第一电致发光化合物可以是电致发光聚合物或低分子量共轭电致发光化合物。 第二电致发光化合物是具有一个或多个配体的金属离子络合物,通常为单核或双核。 所述一个或多个配体中的至少一个被共轭部分取代,例如低聚 - 亚苯基亚乙烯基或低聚 - 亚苯基衍生物。 金属离子络合物是离子化合物,并且具有用于平衡当电致发光器件偏置时能够在电致发光器件内迁移的金属离子电荷的抗衡离子。