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Materials 2017, 10(3), 227; doi:10.3390/ma10030227

Tunable Luminescence in Sr2MgSi2O7:Tb3+, Eu3+Phosphors Based on Energy Transfer

Department of Chemistry and Pharmaceutical Science, Qindao Agricultural University, Qingdao 266109, China
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Authors to whom correspondence should be addressed.
Academic Editors: Jonathan Kitchen and Robert Elmes
Received: 22 December 2016 / Accepted: 17 February 2017 / Published: 24 February 2017
(This article belongs to the Special Issue Luminescent Materials 2017)
View Full-Text   |   Download PDF [4166 KB, uploaded 2 March 2017]   |  

Abstract

A series of Tb3+, Eu3+-doped Sr2MgSi2O7 (SMSO) phosphors were synthesized by high temperature solid-state reaction. X-ray diffraction (XRD) patterns, Rietveld refinement, photoluminescence spectra (PL), and luminescence decay curves were utilized to characterize each sample’s properties. Intense green emission due to Tb3+ 5D4→7F5 transition was observed in the Tb3+ single-doped SMSO sample, and the corresponding concentration quenching mechanism was demonstrated to be a diople-diople interaction. A wide overlap between Tb3+ emission and Eu3+ excitationspectraresults in energy transfer from Tb3+ to Eu3+. This has been demonstrated by the emission spectra and decay curves of Tb3+ in SMSO:Tb3+, Eu3+ phosphors. Energy transfer mechanism was determined to be a quadrupole-quadrupole interaction. And critical distance of energy transfer from Tb3+ to Eu3+ ions is calculated to be 6.7 Å on the basis of concentration quenching method. Moreover, white light emission was generated via adjusting concentration ratio of Tb3+ and Eu3+ in SMSO:Tb3+, Eu3+ phosphors. All the results indicate that SMSO:Tb3+, Eu3+ is a promising single-component white light emitting phosphor. View Full-Text
Keywords: energy transfer; single-component; white light energy transfer; single-component; white light
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Li, M.; Wang, L.; Ran, W.; Deng, Z.; Shi, J.; Ren, C. Tunable Luminescence in Sr2MgSi2O7:Tb3+, Eu3+Phosphors Based on Energy Transfer. Materials 2017, 10, 227.

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