Luminescent properties of complexes Y1−xEux(TTA)3(TPPO)2 in nano-TiO2

A series of HTTA (thenoyltrifluoroacetone) and TPPO (trioctylphosphine oxide) complexes with different molar ratios of Eu3+ to Y3+ has been synthesized. Characterization with XRD, IR, UV, elemental analysis and fluorescence spectroscopy has also been carried out. These results showed luminescence of Eu3+ complex was enhanced after doped with Y3+. The organic-inorganic thin film of complexes Y1−xEux(TTA)3(TPPO)2 in nano-TiO2 was fabricated, and the nano-TiO2 has been used in the luminescence layer to change the luminescence property of complexes Y1−xEux(TTA)3(TPPO)2. It was found that there was an efficient energy transfer process between the ligands and metal ions.