Multicolor Photoluminescence and Persistent Luminescence Characteristics of Mg3Y2Ge3O12∶Pr3+ Materials

被引：0

作者：

Guo H. ^{[1
]}

Zhang T. ^{[1
]}

Shi Q. ^{[1
]}

Qiao J. ^{[1
]}

Cui C. ^{[1
]}

Huang P. ^{[1
]}

Wang L. ^{[1
]}

机构：

[1] College of Physics, Taiyuan University of Technology, Taiyuan

来源：

Faguang Xuebao/Chinese Journal of Luminescence | 2024年 / 45卷 / 03期

基金：

中国国家自然科学基金;

关键词：

anti-counterfeiting; Mg[!sub]3[!/sub]Y[!sub]2[!/sub]Ge[!sub]3[!/sub]O[!sub]12[!/sub]∶Pr[!sup]3+[!/sup; multicolor; persistent luminescent materials;

D O I：

10.37188/CJL.20230315

中图分类号：

学科分类号：

摘要：

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 luminescence（PersL）were studied by a series of characterization methods such as X-ray diffraction（XRD），PL spectra，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 energy 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，because 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. © 2024 Editorial Office of Chinese Optics. All rights reserved.

引用

页码：424 / 433

页数：9

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