发光学报2024，Vol.45Issue(3)：424-433,10.DOI:10.37188/CJL.20230315
Mg3Y2Ge3O12∶Pr3+材料的多色发光及余辉性能
Multicolor Photoluminescence and Persistent Luminescence Characteristics of Mg3Y2Ge3O12:Pr3+ Materials
摘要
Abstract
In this paper,a novel Mg3Y2Ge3O12∶Pr3+ persistent luminescent material with multicolor luminescence was prepared by high temperature solid phase method.The properties of photo-luminescence(PL)and persistent lu-minescence(PersL)were studied by a series of characterization methods such as X-ray diffraction(XRD),PL spec-tra,PersL spectra,PersL decay curves and thermoluminescence(TL)curves.The PL spectra exhibit two strong spikes emission at 485 nm and 609 nm under excitation of 283 nm,which can attributed to 3P2→3H4 and 3P0→3H6 en-ergy transitions of Pr3+,respectively.By regulating the concentration of Pr3+,the relative emission intensity of green and red emission is effectively changed which achieving the multicolor PL.In addition,the material also exhibits multicolor PersL emission after the cessation of the activating light source,and the PersL decay time for the optimal sample(Mg3Y2Ge3O12∶0.015Pr3+)can last more than 1 200 s.Afterwards,we further investigated the distribution of the trap and the charge,discharge process of the PersL.The results indicate that the concentration of shallow trap in Mg3Y2Ge3O12∶Pr3+ is relatively low,which leads to weak PersL performance at room temperature.In addition,be-cause the material has an ultra-wideband trap distribution in the high temperature region,we further explored its multi-color PersL performance at high temperatures.In summary,we have successfully prepared a PersL material with single ion activation which can adjust PL and PersL color.Considering its color change characteristics at both room temperature and high temperature conditions,the material has potential application value in the field of high temperature warning signs and anti-counterfeiting.关键词
长余辉发光材料/Mg3Y2Ge3O12∶Pr3+/多色化/防伪Key words
persistent luminescent materials/Mg3Y2Ge3O12∶Pr3+/multicolor/anti-counterfeiting分类
数理科学引用本文复制引用
郭海洁,张涛,时秋峰,乔建伟,崔彩娥,黄平,王磊..Mg3Y2Ge3O12∶Pr3+材料的多色发光及余辉性能[J].发光学报,2024,45(3):424-433,10.基金项目
国家自然科学基金(12204344,52102169) （12204344,52102169）
山西省自然科学基金(20210302123127)Supported by National Natural Science Foundation of China(12204344,52102169) （20210302123127）
Natural Science Foundation of Shanxi Province(20210302123127) （20210302123127）
