Bi^(3+)掺杂对YAG:Ce^(3+)荧光粉发光性能的影响

The Photoluminescence of Bi^(3+) Doping YAG:Ce^(3+) Phosphors

Bi 3+掺杂YAG:Ce3+荧光粉由溶胶凝胶法合成.结构和结晶过程分析表明,其结晶程度良好.光谱分析表明,Bi 3+的掺杂可以使Ce3+的荧光峰位红移.Ce3+的荧光强度随Bi 3+掺杂浓度的增加而增加,这是由Bi 3+与Ce3+之间的能量传递引起的.之后随着掺杂浓度的继续增加Ce3+的荧光强度减小,这是由浓度猝灭所致.

The Bi 3＋doping YAG：Ce3＋phosphors were successfully synthesized.The red shift of Bi 3＋doping YAG：Ce3＋phosphor＇s photoluminescence（PL）peak was observed in the PL spectra.The intensity of PL peaks was enhanced with the increasing of Bi 3＋concentration and then decreased with higher concentration of Bi 3＋.The effect of energy transfer between Bi 3＋,Ce3＋and the concentration quenching were discussed.