Long Persistent Luminescence in Cu2+-Doped SrGa2Ge2O8 for Information Storage and EncryptionClick to copy article linkArticle link copied!
- Teng ZhangTeng ZhangCenter of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, ChinaMore by Teng Zhang
- Huijuan YuanHuijuan YuanCenter of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, ChinaMore by Huijuan Yuan
- Pengcheng WuPengcheng WuCenter of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, ChinaMore by Pengcheng Wu
- Heyi Yang*Heyi Yang*Email: [email protected]Center of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, ChinaMore by Heyi Yang
- Fangyi ZhaoFangyi ZhaoCenter of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, ChinaMore by Fangyi Zhao
- Qinan MaoQinan MaoCenter of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, ChinaMore by Qinan Mao
- Meijiao LiuMeijiao LiuSchool of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, ChinaMore by Meijiao Liu
- Jiasong Zhong*Jiasong Zhong*Email: [email protected]Center of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, ChinaMore by Jiasong Zhong
Abstract

Information storage and encryption are the key technologies for modern information transmission. However, most optical information storage technologies based on long persistent luminescent (PersL) only have one fixed response mode, which is easy to imitate, limiting their security in advanced information storage and encryption applications. Besides, the cost of rare earth-doped PersL materials restricts their wide application. Therefore, exploring non-rare earth-doped multimode PersL phosphors is an urgent and important topic. In this work, a novel SrGa2Ge2O8:Cu2+ (SGGO:Cu2+) phosphor with yellow–green PersL at 535 nm and near-infrared emission excited by ultraviolet light is designed. Furthermore, the two luminescence peaks of SGGO:0.007Cu2+ exhibit discriminable thermal quenching characteristics. Prominently, an outstanding photochromic performance from white to gray within 60 s under 254 nm light is found. The phosphor also has good bleaching and recovery ability under the irradiation of 450 nm blue light or heating treatment. Finally, the yellow–green PersL combined with thermochromism and reversible white-to-gray photochromism provides a promising multimode luminescent material, demonstrating the potential for multimode optical information storage and encryption applications.
Cited By
This article has not yet been cited by other publications.
Article Views
Altmetric
Citations
Article Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.
Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.
The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated.