| abstract |
The present invention relates to an organic electroluminescent element (organic EL element) which improves the luminous efficiency of the element, ensures sufficient driving stability, and has a simple structure. This organic EL element has a light-emitting layer between an anode and a cathode laminated on a substrate, and the light-emitting layer contains A) a phosphorescent dopant having an emission peak wavelength longer than 600 nm and B) a host material. Derivatives containing any two or more of b1) N-substituted indolocarbazole derivatives, b2) 8-hydroxyquinoline aluminum complex derivatives, and b3) diindolocarbazole derivatives At least 2 compounds of choice. |