Composite material, light emitting element and light emitting device

摘要

An object of the present invention is to provide a composite material formed of an organic compound and an inorganic compound, and has an excellent carrier transporting property, an excellent carrier injecting property to the organic compound, as well as excellent transparency. A composite material of the present invention for achieving the above object is a composite material of an organic compound represented in the general formula below, and an inorganic compound. For the inorganic compound, an oxide of a transition metal, preferably an oxide of a metal belonging to groups 4 to 8 of the periodic table, in particular vanadium oxide, tantalum oxide, molybdenum oxide, tungsten oxide, rhenium oxide, and ruthenium oxide, can be used.;

主权项

1. A light emitting device comprising a light emitting element, the light emitting element comprising:
an anode; a layer over and in contact with the anode, the layer comprising an aryl carbazole compound which does not have an arylamine skeleton and an inorganic compound selected from tantalum oxide, molybdenum oxide, tungsten oxide, and ruthenium oxide; a hole transporting layer over the layer, the hole transporting layer comprising an aromatic amine compound; a light emitting layer over the hole transporting layer, the light emitting layer comprising a light emitting substance; and a cathode over the light emitting layer.