摘要
The luminophors of four kinds of alkaline earth meta-silicates doped with Eu^3 and/or Bi^(3+)ion(s)were synthesized and the luminescence properties of Bi^(3+)and Eu^(3+)ions were studied.The regularities that Me(Ⅱ) ions affect the luminescence of Eu^(3+)ion sensitized by Bi^(3+)ion were investigated.The optimum composition and synthesis condition were obtained.The absorption and emission peak are situated at 283 and 353nm with the optimum concentration 0.02 mol of Bi^(3+)in CaSiO_3:Bi.In CaSiO_3:Bi,the optimum concentration of Bi^(3+)is 0.007 mol and that of Eu^(3+)is 0.040 mol.For all of the alkaline earth ions concerned in MeSiO_3:Eu,Bi,the Bi^(3+)can sensitize the Eu^(3+)and the Me(Ⅱ)ions in host and make a great difference in the adsorption hand of Bi^(3+)ion.by exciting Bi^(3+)ion,the emissions are from both Eu^(3+)and Bi^(3+)ions and the best sensitization effect is achieved when Me(Ⅱ)is Sr.
The luminophors of four kinds of alkaline earth meta-silicates doped with Eu^3 and/or Bi^(3+)ion(s)were synthesized and the luminescence properties of Bi^(3+)and Eu^(3+)ions were studied.The regularities that Me(Ⅱ) ions affect the luminescence of Eu^(3+)ion sensitized by Bi^(3+)ion were investigated.The optimum composition and synthesis condition were obtained.The absorption and emission peak are situated at 283 and 353nm with the optimum concentration 0.02 mol of Bi^(3+)in CaSiO_3:Bi.In CaSiO_3:Bi,the optimum concentration of Bi^(3+)is 0.007 mol and that of Eu^(3+)is 0.040 mol.For all of the alkaline earth ions concerned in MeSiO_3:Eu,Bi,the Bi^(3+)can sensitize the Eu^(3+)and the Me(Ⅱ)ions in host and make a great difference in the adsorption hand of Bi^(3+)ion.by exciting Bi^(3+)ion,the emissions are from both Eu^(3+)and Bi^(3+)ions and the best sensitization effect is achieved when Me(Ⅱ)is Sr.
