| 摘要 |
Organic electroluminescent devices having a luminescent material-containing layer interposed between a positive electrode and a negative electrode and designed to supply an electrical energy to the luminescent material that emits light upon receipt of the energy. The negative electrode contains f and p elements. The f is at least one element selected from those having electronegativity values higher than that of calcium, and, equal to or lower than that of vanadium. The p is at least one element selected from those having electronegativity values equal to or higher than that of aluminum. The negative electrode may further contain d element, if necessary. The d is at least one element selected from those having electronegativity values equal to or higher than any of those of iron, cobalt and nickel, and, equal to or lower than that of gold.
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