Issue 22, 2020
From the journal:

RSC Advances

Enhanced yellow afterglow in Ca2SnO4:Dy3+ by co-doping Na+/K+

Yue Chen,a   Jun Zou, ORCID logo *a   Mingming Shia  and  Bobo Yanga  

* Corresponding authors

a School of Materials Science and Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China
E-mail: zoujun@sit.edu.cn

Abstract

A new yellow long afterglow luminescent material Ca2SnO4:Dy3+ was prepared by the solid state method at 1350 °C. The yellow LLP (long-lasting phosphorescent) material Ca2SnO4:Dy3+ was prepared by co-doping alkaline ions (K+ and Na+) and investigated using an X-ray diffractometer (XRD), photoluminescence spectrometer, afterglow meter and thermoluminescence spectrometer. The excitation and emission spectra showed an excitation peak at 350 nm and an emission peak at 573 nm. The optimized Dy3+ dopant concentration was found to be 1 mol%. For the improvement in the photoluminescence performance, we can co-dope it with alkaline ions (K+ and Na+), with the optimal concentration of the alkaline ions being 1 mol%. On the basis of the experimental results, we constructed a probable model for explaining the mechanism of LAG in detail.

Graphical abstract: Enhanced yellow afterglow in Ca2SnO4:Dy3+ by co-doping Na+/K+

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Article information

DOI
https://doi.org/10.1039/D0RA00656D
Article type
Paper
Submitted
21 Jan 2020
Accepted
11 Mar 2020
First published
31 Mar 2020
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2020,10, 13076-13082

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Enhanced yellow afterglow in Ca2SnO4:Dy3+ by co-doping Na+/K+

Y. Chen, J. Zou, M. Shi and B. Yang, RSC Adv., 2020, 10, 13076 DOI: 10.1039/D0RA00656D

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