Patent ID: 7560174

Claim:
An organic electroluminescent device comprising: a pair of electrode; and at least one organic layer between the pair of electrode, the at least one organic layer including a luminescent layer, wherein the luminescent layer contains at least one phosphorescent material and at least one compound represented by the formula (IV): wherein R 41 , R 42 , and R 43 each represents a hydrogen atom or an alkyl group; R 44 represents an alkyl group, an aryl group or an aromatic heterocyclic group; R 45 , R 46 , R 47 , and R 48 each represents a hydrogen atom, an alkyl group, a fluoro group or a perfluoro-substituted alkyl group; M 4 represents a divalent or trivalent metal ion; n 4 represents an integer of from 1 to 3; L 4 represents an alkoxy ion, an aryloxy ion or a silyloxy group; and m 4 represents an integer of from 0 to 2.