Synthesis and fluorescence properties of doping complexes Sm_1-xM_x (TTA)₃ phen as light conversion agent

A series of doping complexes Sm_1-xM_x (TTA)₃ phen (M denotes Gd³⁺ or Y³⁺, TTA stands for 2-thenoyltrifluoroacetone, phen denotes 1, 10-phenanthroline, x is the mole fraction of doping elements) as light conversion agent are synthesized by chemical precipitation method, and the characteristics of the compounds are performed using infra-red spectrum (IR), UV-visible absorption and fluorescence spectroscopy. The results indicate that the structure of Sm_1-xM_x (TTA)₃ phen are similar to Sm (TTA)₃ phen, and the characteristic UV absorption peaks of Sm_1-xM_x (TTA)₃phen are depended on organic ligands. Photoluminescence measurements indicate that the complexes emit strong luminescence, which is determined by the transitions of center samarium ion under UV radiation. The strongest luminescence of Sm_0.5Y_0.5 (TTA)₃ phen is at 647 nm, up to 9.5 × 10⁶ cps. The luminescence of Sm_1-xM_x (TTA)₃ was enhanced with the addition of sensitized elements, Y³⁺ is better than Gd³⁺.