摘要
使用高温常压方法合成了稀土发光材料LaOBr:Dy3+,Tb3+,研究了其结构、紫外及阴极射线激发下的激发与发射光谱Dy3+的掺杂可将Tb3+的5D3能级的激发能有效地弛豫到5D4能级,从而使5D4-7FJ(J=0.1…6)的发射,尤其是5D4-7F5的发射明显增强,发光亮度提高。
The rare earth luminescence materials LaOBr: Tb3+Dy3+ were synthesized with high temperature,and the structure and luminescence characteristcs were studied. The codoping Dy3+ may makes the energy of 5D3 of Tb3+ transfer to 5D4 level, which makes the emmision of 5D4-7FJ, specially of 5D4-7F5,enhance obviously, and the tatol brightness is increased by about 40% in comparision with the sample without Dy3+ ions, which is result from energy transfer of diple-diple interaction between Tb3+ and codoping Dy3+.
出处
《材料研究学报》
EI
CAS
CSCD
1996年第5期536-540,共5页
Chinese Journal of Materials Research
基金
国家教委优秀年轻教师基金
中科院金属所快速凝固与非平衡合金国家重点实验室项目
关键词
溴氧镧铽镝
稀土发光
共振能量传递
Rare earth luminescence
energy transfer
LaOBr:Tb ̄(3+), Dy ̄(3+)