| abstract |
The present invention relates to an organic electroluminescent device (organic EL device) using phosphorescence light emission which improves the luminous efficiency of the device, ensures sufficient driving stability, and has a simple configuration. The organic EL device is formed by stacking an organic layer including an anode, a hole transporting layer, a light emitting layer and an electron transporting layer and a cathode on a substrate, having a hole transporting layer between the light emitting layer and the anode, and having an electron transporting layer between the light emitting layer and the cathode. As the organic EL device, at least one metal selected from ruthenium, rhodium, palladium, silver, rhenium, osmium, iridium, platinum and gold as a guest material in the light emitting layer, a compound represented by the following general formula (I) as a host material It contains the organometallic complex containing a.n n n n n n n n (Wherein R 1 to R 6 independently represent a hydrogen atom, an alkyl group, an aralkyl group, an alkenyl group, a cyano group, an alkoxy group, an aromatic hydrocarbon group or an aromatic heterocyclic group)n n n n Organic electroluminescent element, host material, guest material, light emitting layer, hole transport layer |