摘要
以碳酸镁和硼酸为原料在高温条件下合成了基质材料MgB4O7并制备了MgB4O7:Dy磷光体。用RGD-3热释光剂量仪和三维热释光谱仪分别测量了这种磷光体的二维发光曲线和三维发光谱,实验观察到:1)MgB4O7:Dy磷光体热释光发光峰峰温为220℃和380℃;2)Dy3+离子的发光波长为480nm、575nm和660nm;3)磷光体220℃和380℃发光峰的相对强度随高温固相反应温度的升高而变化,但发光峰温和波长基本保持不变。对比MgB4O7:Dy和MgSO4:Dy两种热释光材料的三维发光谱,验证了掺入Dy3+离子的热释光材料的发光峰峰温主要由基质材料决定,发光波长则取决于Dy3+离子的能级跃迁的结果。
The host MgB4O7 and the phosphor MgB4O7:Dy were synthesized under the condition of high temperature by using magnesium carbonate and boric acid. The 2-dimensional (2D) glow curve and 3-dimensional (3D) emission spectra of this TL material were measured by using RGD-3 reader and the 3D TL/OSL automatic spectrometer. From the experiment we can conclude that: 1) the phosphor MgB4O7:Dy has two TL glow peaks at about 220℃ and 380℃; 2) the wavelengths of the TL emission spectra of Dy3+ are 480nm, 575nm and 660nm;...
出处
《核技术》
EI
CAS
CSCD
北大核心
2007年第2期130-134,共5页
Nuclear Techniques
基金
南昌大学校基金(Z03353)
关键词
四硼酸镁
镝
热释光
Magnesium tetraborate
Dysprosium
Thermoluminescence
