A novel rare earth complex Eu(TTA)(2NH₂-phen)₃was synthesized. The Eu complex was blended with poly(N-vinylcarbazole)(PVK)in different weight ratios and spin coated into films. The photoluminescence of Eu (TTA)(2NH₂-phen)₃was obtained. Multilayer devices with PVK∶Eu(TTA)(2NH₂-phen)₃as the active layer were fabricated, and the device structure was ITO/PVK∶Eu(TTA)(2NH₂-phen)₃/2, 9-dimethyl-4, -diphenyl-1, 10-phenan throline(BCP)/8-hydroxyquinoline aluminum(Alq₃)/Al. The influence of Eu(TTA)(2NH₂-phen)₃doping concentration on electroluminescence spectroscopy was studied. It was found that the EL spectra do not change with the doping concentration. The spectral overlapping of the emission spectrum of PVK and the absorption spectrum of Eu(TTA)(2NH₂-phen)₃is very small. From the above experimental results, it can be demonstrated that the mainly mechanism of Eu(TTA)(2NH2₂-phen)₃EL is charge carrier directly trapped by ligand.