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    • 7. 发明授权
    • Organic electroluminescence device having current injection layer between light emitting layer and cathode
    • 在发光层和阴极之间具有电流注入层的有机电致发光元件
    • US06806640B2
    • 2004-10-19
    • US10364497
    • 2003-02-12
    • Hiroyuki OkadaShigeru TabatakeShigeki NakaHiroyoshi Onnagawa
    • Hiroyuki OkadaShigeru TabatakeShigeki NakaHiroyoshi Onnagawa
    • H05B3300
    • H01L51/5092H01L51/0059H01L51/0081H01L2251/5323
    • Provided is an organic electroluminescence device which operates at a low voltage, has a uniform light emission surface, and can display high-quality images. In an organic electroluminescence device, an anode, a hole transport layer made of an organic compound, a light emitting layer made of an organic compound, and a cathode are stacked in the order named, and an electron injection layer containing a lanthanoid oxide is formed between the light emitting layer and cathode. The anode and/or cathode is made of a transparent conductive material. In another organic electroluminescence device, an anode, a hole transport layer made of an organic compound, a light emitting layer made of an organic compound, and a cathode are stacked in the order named, and an electron injection layer formed by mixing a lanthanoid metal oxide and organic compound is formed between the light emitting layer and cathode.
    • 提供一种在低电压下工作的有机电致发光元件,具有均匀的发光面,能够显示高质量的图像。 在有机电致发光元件中,阳极,由有机化合物构成的空穴传输层,有机化合物制成的发光层和阴极按顺序层叠,形成含有镧系元素氧化物的电子注入层 在发光层和阴极之间。 阳极和/或阴极由透明导电材料制成。 在另一种有机电致发光器件中,阳极,由有机化合物制成的空穴传输层,由有机化合物制成的发光层和阴极按顺序层叠,并且通过将镧系元素金属 在发光层和阴极之间形成氧化物和有机化合物。