β-Zn3(PO4)2：Mn^2＋，B^3＋长余辉发光材料的性能

Long Lasting Phosphorescent Properties of β-Zn_3(PO_4)_2∶Mn^(2+),B^(3+) Materials

采用高温固相法分别合成了β-Zn3(PO4)2∶Mn2+和不同HBO3含量的β-Zn3(PO4)2∶Mn2+,B3+红色长余辉材料。XRD结果表明,HBO3的加入对于β-Zn3(PO4)2物相的形成和结晶温度并没有显著影响。从不同样品的激发和发射光谱可以看出,HBO3的加入并没有改变其激发和发射光谱位置,而对其强度有一定影响。对于Zn2.85(P1-x/2O4)2∶Mn20.+15,Bx3+来说,当B3+加入量为x=0.05时发光强度最强;而对其余辉衰减光谱来说,HBO3的加入明显提高了材料的余辉性能,并且当B3+加入量为x=0.1时余辉性能最强,这是由于B3+的不等价取代增加了材料中的陷阱而导致的结果。

Red Long lasting phosphorescent （LLP） materials β-Zn2.85 （ PO4 ）2：Mn0.15^2＋ and β-Zn2.85 （ P1-x/2O4 ）2： Mn0.15^2＋ ,Bx^3＋ were prepared by high temperature solid-state method, respectively. The XRD results showed that the addition of HBO3 has no notable effects on the formation of Zn3 （ PO4 ） 2 crystal structure. The excitation and emission spectra of series doped materials were studied. The materials show red long lasting phosphorescence and the highest emission peak is located at 616 nm. From the excitation and emission spectra results it could be observed that the doping of HBO3 didn＇t change the spectral shape and position of β-Zn3 （ PO4 ） 2 ： Mn^2＋ , but changed the luminescence intensities. When the doping concentration of B^3＋ is x =0. 05, the luminescence intensity is the strongest. Furthermore, B^3＋ doping also improved the LLP properties. The optimized LLP performance could be obtained when the doping concentration of B3＋ is x = 01 10 with the LLP decay curves. It was due to more traps caused by the unequal doping of B^3＋.