In this work the growth and the characterization of red emitting triple-layer electroluminescent organic devices using vacuum deposited (Eu(TTA)3(TPPO)2) europium complex as emitting layer are described. The observed electroluminescence (EL) is characteristic of the Eu3+ emission. In this device the hole transport layer is obtained using a thin film of 1-(3-methylphenyl)- 1,2,3,4 tetrahydroquinoline-6-carboxyaldehyde-1,1'-diphenylhydrazone (MTCD), while the tris(8- hydroxyquinoline aluminum) (Alq3) is used as electron transport layer (ETL).
