| 摘要 |
PROBLEM TO BE SOLVED: To provide an element having light output of extremely high brightness by using a condensed polycyclic aromatic ring group-containing compound for at least one layer of organic compound layers of the electroluminescence element composed of positive and negative electrodes and of one layer or a plurality of layers of organic compound sandwiched between them. SOLUTION: The condensed polycyclic aromatic ring group-containing compound is expressed by the formula [where, Ar is a condensed polycyclic aromatic ring group that may have a substitution group; R1, R2, and R3 are each a hydrogen atom, alkyl group, aralkyl group, aromatic ring group (except the case when R1 and R2 are hydrogen atoms at the same time); (n) is 0 or 1]. The condensed polycyclic aromatic ring group in cludes groups such as naphthalene, anthracent, and pyrene. The electroluminescence element is formed by forming a layer of the compound between the positive and negative electrodes by a vacuum deposition method or a solution spreading method. The thickness of the organic layer is <=2μm, preferably a thin film <=0.5μm. It has a variety of luminescence wavelengths, presents various luminous hues, has durability, and is easy and low-cost in manufacture.
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