Zhang M, Li J, Yan C
School of Chemical Engineering, Zhongshan University, 510275 Guangzhou.
Guang Pu Xue Yu Guang Pu Fen Xi. 2001 Jun;21(3):304-7.
In this paper, the phosphors with CaS as the host and doped with Eu2+ ion were synthesized in a microwave field at the first time. The influence of the different concentrations of Eu2+ ion on fluorescent properties of the phosphors CaS:Eu2+ was discussed. The experimental results of SEM show that the crystallite structures of the CaS:Eu2+ with different shapes (such as cubic, spherical and rod) and different crystal sizes (100-1,500 nm), for example, nano-scale, submicron-scale or micron-scale can be obtained when doping different concentrations of Eu2+ ion. The fluorescent intensity of the sphere phosphor CaS:Eu2+ is the strongest under the excitation at 254 nm.
本文首次在微波场中合成了以CaS为基质、掺杂Eu2+离子的荧光粉。讨论了不同浓度Eu2+离子对CaS:Eu2+荧光粉荧光性能的影响。扫描电子显微镜（SEM）实验结果表明，掺杂不同浓度的Eu2+离子时，可以获得具有不同形状（如立方、球形和棒状）和不同晶体尺寸（100-1500nm），例如纳米级、亚微米级或微米级的CaS:Eu2+微晶结构。球形荧光粉CaS:Eu2+在254nm激发下的荧光强度最强。
