摘要
采用溶胶-凝胶法制备了掺杂Gd3+离子的Ce0.67Tb0.33MgAl11O19(CTMA),分别研究了Gd3+离子取代部分Ce3+离子和Gd3+离子取代部分Tb3+离子后对Ce0.67Tb0.33MgAl11O19在紫外线激发下发射可见光的影响。由于Gd3+离子在Ce3+离子和激活剂Tb3+离子间起到良好的能量传递的作用,所以掺杂Gd3+离子后对Ce0.67Tb0.33MgAl11O19在紫外线激发下的主发射峰强度影响不大,在一定程度上还有加强作用。同时掺杂Gd3+离子使Ce0.67Tb0.33MgAl11O19在紫外线激发下发射的可见光的颜色发生了少量变化。
Ce0.67Tb0.33MgAl11O19: Gd3+ has been synthesized by processing of sol-gel, the influence of Gd doping on fluorescence of Ce0.67Tb0.33MgAl11O19 was investigated by changing the concentration and the substituted object of Gd3+ ion. The effects of substituting a part of Ce and a part of Tb with Ga on fluorescence of Ce0.67Tb0.33MgAl11O19 was studied respectively. Gd3+ transfers the energy absorbed by Ce3+ to Tb3+ efficiently, so the fluorescence intensity of Ce0.67Tb0.33MgAl11O19 changed less when Gd3+ is doped into Ce0.67Tb0.33MgAl11O19, even enhanced to some extent, And the emission color of Ce0.67Tb0.33MgAl11O19 will change a little.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2004年第10期1116-1119,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金(59872016)
