Luminescent properties of rare earth complexes of Gd_(1-x)Eu_x(TTA)_3Dipy in nano-TiO_2

摘要

Some kinds of rare earth complexes were synthesized using the ligands of thenoyltrifluoroacetone (HTTA), 2, 2/-dipyridyl(Dipy) and different metal ions (Eu~(3+) and Gd~(3+)). Their contents, structures and optoelectronic property were monitored by elemental analysis, DTA-TGA, IR and fluorescence spectroscopy. This result showed luminescence of Eu~(3+) complex was enhanced after doped with Gd~(3+) , the thermal stability of rare earth complexes was also reported. In addition, the organic-inorganic combined device ITO/PVK: Gd_(1-x)Eu_x(TTA)_3Dipy: TiO_2/Al was fabricated, the nano-TiO_2 has been used in the luminescence layer to change the electroluminescence property of Gd_(1-x)Eu_x(TTA)_3Dipy. We have monitored the spectra of Gd_(1-x)Eu_x(TTA)_3Dipy with different ratios for spin-cast film r min~(-1). It was found that there was an efficient energy transfer process between the ligands and metal ions.