Experimental Research On Rare Earth Ions Complexes Sensitization Effect

Rare earth complex-doped polymers have promising applications not only in polymer light waveguides and fiber amplifiers, but also in other optics detectors, because of their width absorb section,sharp apex of rare earth ions,high doped concentrations, favorable fluorescence intensity and long fluorescence lifetimes. So, in this paper, fluorescence properties of polymers doped with rare earth ions were investigated in details.Firstly, the development of rare earth complex-doped polymer amplifiers was given. The merit of rare earth complex-doped polymer amplifiers has been introduced. The mechanism of luminous of rare earth ions and sensitization effect was explained.Secondly, based on the energy level match principle between rare earth ions and ligand and other related regulations, through the comparative analysis of the experimental materials, the experimental materials which were elected. Such as EuCl₃ ,SmCl₃ ,Tb₂O₃, TTFA and so on.Finally rare earth ions doped and co-doped polymer were synthesized by useding EuCl₃ ,SmCl₃ ,Tb₂O₃, and TTFA. The two kinds of rare-earth ions complexes was prepared. its absorption spectrum and fluorescence spectroscopy was measured and characteristics of sensitization effect among Eu³⁺,Sm³⁺,Tb³⁺and the characteristics of sensitization effect between TTFA and rare-earth ions was analysised.Based on the results of the analysis of the results,it is can be found that in experimental rare-earth ions single-doped complexs RE-Eu³⁺,Sm³⁺,Tb³⁺ and TTFA and rare-earth ions co-doped complexs Eu:,Sm:(TTFA)₃,Tb:,Sm:(TTFA)₃,Eu:,Tb:(TTFA)₃ both have sensitization effect in particular Eu(TTFA)₃, Eu:,Sm:(TTFA)₃.So it has good developed prospects in applying to polymer fiber amplifier.