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Preparation and fluorescence properties of Zn2SnO4:Eu3+ orange emitting afterglow phosphor

In this study, an orange emitting afterglow phosphor of Zn2SnO4:Eu3+ was fabricated using the co-precipitation & hydrothermal method, and then annealed in Ar atmosphere at 1000 °C. X-ray diffraction, Raman spectra, EDX, fluorescence spectrometer, SEM and TEM were performed to characterize the ta...

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Bibliographic Details
Published in:Ceramics international 2020-08, Vol.46 (12), p.20277-20283
Main Authors: Fu, Juan, Sun, Liyuan, Hu, Xiaowu, Du, Hongli, Li, Guizhi, Kuang, Yongqing, Li, Mei, Guo, Dongcai
Format: Article
Language:English
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Summary:In this study, an orange emitting afterglow phosphor of Zn2SnO4:Eu3+ was fabricated using the co-precipitation & hydrothermal method, and then annealed in Ar atmosphere at 1000 °C. X-ray diffraction, Raman spectra, EDX, fluorescence spectrometer, SEM and TEM were performed to characterize the target products. As revealed from the XRD analysis results, the fabricated product was the cubic inverse spinel structure Zn2SnO4 (JCPDS 24–1470) exhibiting high crystallinity. As confirmed by Raman and EDX spectra, the target product was Zn2SnO4:Eu3+. As Zn2SnO4:Eu3+ was excited at 347 nm, its fluorescence spectra showed the magnetic dipole emission at 589 nm and the electric dipole transition at 610 nm, complying with the transitions of Eu3+ ions from 5D0→7F1 and 5D0→7F2. Meantime, Zn2SnO4:Eu3+ phosphors displayed an orange afterglow, and its attenuating characteristics met the exponential equation. Moreover, the optimal doping amount of Eu3+ ions was 15 mol%, and the concentration quenching took place by the cross relaxation. The color coordinate of the product (x = 0.15) was determined as (0.522, 0.4635), and the color purity reached 98.3%.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2020.05.110