A multicolor persistent luminescent phosphor Sr2Ga2GeO7:Pr3+ for dynamic anticounterfeiting

被引：53

作者：

Ji, Liping ^{[1
]}

Zhou, Jinyu ^{[1
]}

Zhang, Jiachi ^{[1
]}

Zhang, Zhiya ^{[1
]}

Ma, Zhidong ^{[1
]}

Wang, Wenxiang ^{[1
]}

Li, Huihui ^{[1
]}

Wu, Chunfang ^{[1
]}

机构：

[1] Lanzhou Univ, Natl & Local Joint Engn Lab Opt Convers Mat & Tec, Lanzhou, Gansu, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2019年 / 102卷 / 09期

关键词：

luminescence; optical materials; properties; phosphors; PHOTO-STIMULATED LUMINESCENCE; LONG-PERSISTENT; PR3+; BANDGAP; GREEN;

D O I：

10.1111/jace.16432

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Persistent luminescence (PersL) phosphor is a glow-in-the-dark material that has been widely applied. Here, we report a multicolor PersL phosphor Sr2Ga2GeO7:Pr3+. The PersL color can be tuned from deep red to blue. It reveals that the luminescent color modulation of the Sr2Ga2GeO7:Pr3+ phosphor is essentially associated with the cross-relaxation effect of Pr3+ in the host with low-phonon assistance energy. The PersL lifetime of the multicolor phosphors can be also tuned. Based on the unique features of Sr2Ga2GeO7:Pr3+ phosphor, some simple PersL images are fabricated to emit dynamic multicolor information, and it shows that the PersL image even depicts dynamic multicolor anticounterfeiting.

引用

页码：5465 / 5470

页数：6

共 23 条

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