La_2Sn_2O_7:Ce、Tb的合成及发光性能研究

STUDIES ON THE SYNTHESIS AND LUMINESCENT PROPERTIES OF La _2Sn_2O_7 :Ce, Tb

用柠檬酸络合法合成了La_2Sn_2O_7:Ce^(3+)、Tb^(3+)发光体,并利用X-射线粉未衍射进行结构分析,确定了发光体柏晶体结构通过激发光谱和发射光谱的分析,研究了试样的发光特性以及在激活剂、敏化剂掺杂下的发光行为,并对La_2Sn_2O_7基质中Ce^(3+)对Tb^(3+)的能量传递和敏化作用进行了探讨.

The samples of La2Sn2O7:Ce3 + ,Tb3+ have been prepared by citric acid comploxing method. The crystal structure of samples was determined by X-ray powder diffraction.Luminoscent character and behavior of samples wore studied by excitation and emission spectra. Energy transmission and sensitization of Ce3+→Tb3+ were searched.