【摘要】 研究了Tb3+自敏化效应与Gd3+-Tb3+能量转移对硅酸盐玻璃发光性能的影响。结果表明,随着Tb3+掺杂量的增加,Tb3+的400～450 nm蓝色荧光发射减弱,而485 nm和545 nm绿光发射增强。Tb3+掺杂硅酸盐玻璃中,Tb3+之间存在能量转移,产生自敏化效应,这种转移是由Tb3+之间电偶极-电四极的相互作用引起的共振能量转移。Gd3+通过Gd3+-Tb3+间的能量转移对Tb3+的发光起敏化作用,这种能量转移主要是偶极与偶极相互作用引起的共振转移。更多还原

【Abstract】 The effect of Tb3+ self-sensitization and Gd³⁺-Tb³⁺ energy transfer on luminescent properties of Tb3+ doped silicate glasses was investigated.Results showed that the intensity of blue emission decreases,but the intensity of green emission increases with increasing of Tb3+ concentration.Tb3+ self-sensitization takes place by the energy transfer in the manner of resonance between Tb3+ in silicate glasses,which is caused by the interaction between electric dipole and electric quadrupole.Gd3+ can enhance the luminescence of Tb3+ in silicate glasses by the energy transfer in resonance manner from Gd3+ to Tb3+ emission center due to the interaction between electric dipoles.更多还原