ORGANIC ELECTROLUMINESCENT ELEMENT

PROBLEM TO BE SOLVED: To provide an organic electroluminescent element which is superior in charge injection efficiency and in which a high luminous efficiency is realized even if the number of lamination is reduced. SOLUTION: A transparent lower electrode, a luminous layer, and an upper electrode are formed one by one on the surface of a substrate, and the luminous layer is a single layer containing an organic charge transportation material and a light emitting material. The luminous layer has a micro phase separation structure comprised of an N type semiconductor molecule material and a P type π electron conjugate system polymer material. It is desirable that the N type semiconductor material is composed of a fullerene compound and a compound represented by merocyanine system, phthalocyanine system, perylene system, the P type π electron conjugate system polymer material is composed of a compound represented by a polyphenylene-vinylene derivative, a polythiophene derivative, a polypyrrole derivative, and a polyaniline derivative, and the light emitting material is an organometallic complex capable of emitting phosphorescence. COPYRIGHT: (C)2005,JPO&NCIPI