ORGANIC ELECTROLUMINESCENT ELEMENT

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PROBLEM TO BE SOLVED : To provide an organic electroluminescent element excellent in luminescent efficiency and of long life. SOLUTION : The organic electroluminescent element 1 has one or more structures laminating a transparent electrode 12, an opposing electrode 14 arranged in opposition to the transparent electrode, and two layers of organic luminescent layers 20, 22 through an intermediate conductive layer 30. A difference between a refractive index na of the intermediate conductive layer 30 and that nb of at least one of the organic luminescent layers is within 0.25, and the intermediate conductive layer 30 contains an oxide containing one or more kinds of rare earth elements. COPYRIGHT : (C)2007, JPO&INPIT