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    • 9. 发明授权
    • Polymer light emitting device
    • 聚合物发光装置
    • US06403236B1
    • 2002-06-11
    • US09145338
    • 1998-09-01
    • Toshihiro OhnishiTakanobu NoguchiShuji Doi
    • Toshihiro OhnishiTakanobu NoguchiShuji Doi
    • H05B3300
    • H01L51/5012H01L51/0035H01L51/0038Y10S428/917Y10T428/24942
    • A polymer light emitting device at least having a light emitting layer containing a polymeric fluorescent substance and a charge transporting layer, wherein said polymeric fluorescent substance contains one or more kind of repeating units represented by the following formula (1), —Ar1—CR1═CR2—  (1) and said charge transporting layer contains an organic compound satisfying the following conditions 1 and 2 in an amount of from 1 to 70% by weight EOX2−0.15≦EOX1≦EOX2+0.10  (condition 1) &lgr;edge2−30≦&lgr;edge1≦&lgr;edge2+20  (condition 2) (wherein EOX1 and &lgr;edge1 respectively represent an electrochemically determined oxidation potential and an absorption edge wavelength of an absorption spectrum of said organic compound; EOX2 and &lgr;edge2 respectively represent an electrochemically determined oxidation potential and an absorption edge wavelength of an absorption spectrum of said polymeric fluorescent substance used in said light emitting layer; and the unit in the condition 1 is V and the unit in the condition 2 is nm). The polymer light emitting device has a long and excellent stability on driving.
    • 至少具有含有聚合物荧光物质和电荷输送层的发光层的聚合物发光元件,其中所述聚合物荧光物质含有一种以上由下式(1)表示的重复单元,所述电荷输送层 含有满足以下条件1和2的有机化合物的量为1至70重量%(其中EOX1和lambdedge1分别表示所述有机化合物的吸收光谱的电化学测定的氧化电位和吸收边缘波长; EOX2和 lambdedge2分别表示在所述发光层中使用的所述聚合物荧光物质的电化学测定的氧化电位和吸收光谱的吸收边缘波长;条件1中的单位为V,条件2中的单位为nm)。 聚合物发光装置在驱动时具有长且极好的稳定性。