Organic electroluminescent device and display

An organic electroluminescent element comprising a pair of electrodes having therebetween at least one constituting layer containing a phosphorescent light emitting layer, wherein one of the constituting layers contains a compound represented by Formula (15):

• wherein R1 and R2 each independently represents a hydrogen atom or a substituent;
• n and m each represents an integer of 1 to 2;
• k and l each represents an integer of 3 to 4, provided that n+k=5 and l+m=5;
• and Z1, Z2, Z3 and Z4 each represent a 6-membered aromatic heterocyclic ring containing a nitrogen atom;
• and wherein said substituent is selected from the group consisting of an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aryl group, an aromatic heterocyclic group, a heterocyclic group, an alkoxy group, a cyclo alkoxyl group, acyloxy group, alkylthio group, cycloalkylthio group, an arylthio group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfamoyl group, an acyl group, an acyloxy group, an amino group, a carbamoyl group, an ureido group, a sulfinyl group, an alkylsulfonyl group, an aryl sulfonyl group, an amino group, a halogen atom, a fluoride hydro fluoro carbon group, a cyano group, a nitro group, a hydroxyl group, a mercapto group and a silyl group.