发光学报, 2011, 32 (2): 144, 网络出版: 2011-02-21
Zn2SiO4(ZnB2O4)∶Mn2+,Sm3+发光材料的制备与荧光性能
Fabrication and Luminescence Properties of Zn2SiO4(ZnB2O4)∶Mn2+,Sm3+ Phosphors
发光材料 烧结温度 Sm3+含量 Zn2SiO4(ZnB2O4)∶Mn2+ Zn2SiO4(ZnB2O4)∶Mn2+ Sm3+ Sm3+ phosphors sintered temperature Sm3+ content
摘要
使用高温固相法首次合成了Zn2SiO4(ZnB2O4)∶Mn2+,Sm3+发光材料,探讨了烧结温度、Sm3+含量对样品荧光性能的影响。利用X射线衍射(XRD)、荧光光谱等分析手段对Zn2SiO4(ZnB2O4)∶Mn2+,Sm3+粉末的结构、发光性能进行了表征。确定了该荧光材料的最佳合成条件,离子掺杂浓度等。实验结果表明:组成为Zn2SiO4(ZnB2O4)∶1.2%Mn2+,8%Sm3+的样品在950 ℃还原气氛下烧结,发光强度最高;反应生成的ZnB2O4和掺杂Sm3+可以大幅提高材料发光强度。
Abstract
Zn2SiO4(ZnB2O4)∶Mn2+,Sm3+ phosphors was fabricated by solid reaction method. The influences of sintered temperature and Sm3+ content on the luminescence properties of Zn2SiO4(ZnB2O4)∶Mn2+,Sm3+ phosphors were studied. Powder structure and luminescence properties were characterized by means of XRD, excitation and emission spectra. The experimental results indicate that Zn2SiO4(ZnB2O4)∶Mn2+,Sm3+ has two excitation peaks at 220 nm and 250 nm, the luminescence intensity is the largest when the sintered temperature is at 950 ℃ in reducing atmosphere, and the emission peaks at 521 nm. The ZnB2O4 as a part of host produced in the reaction can improve the luminescence intensity. At 950 ℃,there are most ZnB2O4 reaction products, meanwhile, ZnB2O4 has the best crystalline properties. With the Sm3+ content increased, the phase is not changed, however, to a large extent, the luminescence intensity can be improved. When the Sm3+ mole fraction is 8%, the intensity is the most and 5 times stronger than that for 4% Sm3+. With the increasing of Sm3+ mole fraction, the luminescence emission peak has blue-shift from 540 nm to 521 nm.
张志伟, 张卫国, 牛少莉. Zn2SiO4(ZnB2O4)∶Mn2+,Sm3+发光材料的制备与荧光性能[J]. 发光学报, 2011, 32(2): 144. ZHANG Zhi-wei, ZHANG Wei-guo, Niu Shao-li. Fabrication and Luminescence Properties of Zn2SiO4(ZnB2O4)∶Mn2+,Sm3+ Phosphors[J]. Chinese Journal of Luminescence, 2011, 32(2): 144.