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研究了Eu2+和Mn2+共激活的Sr3MgSi2O8的荧光性质.Eu2+和Mn2+在460nm和690nm的发射峰分别由Eu2+的5d→4f跃迁和Mn2+的4T1(4G)→6A1R(6S)跃迁产生.未观察到单掺杂Mn2+的Sr3MgSi2O8的荧光发射,而掺入Eu2+后则出现了Mn2+的690nm光致发光峰,表明Eu2+对Mn2+有敏化作从Eu2+的荧光寿命也受Mn2+含量的影响.实验结果表明,在Sr3MgSi2O8基质中存在着Eu2+对Mn2+的能量传递,属于电偶极-电偶极相互作用引起的共振能量传递.
The fluorescence properties of Sr3MgSi2O8 co-activated by Eu2 + and Mn2 + were studied. The emission peaks of Eu2 + and Mn2 + at 460nm and 690nm are generated by 5d → 4f transition of Eu2 + and 4T1 (4G) → 6A1R (6S) transition of Mn2 + respectively. The fluorescence emission of Sr3MgSi2O8 with single doping Mn2 + was not observed, but the 690nm photoluminescence peak of Mn2 + appeared after doping with Eu2 +, indicating that the fluorescence lifetime of Eu2 + from Mn2 + also affected by Mn2 +. The experimental results show that the energy transfer of Eu2 + to Mn2 + exists in Sr3MgSi2O8 matrix and belongs to the resonance energy transfer caused by the dipole-dipole interaction.