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Open AccessArticle

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

Department of Chemistry and Pharmaceutical Science, Qindao Agricultural University, Qingdao 266109, China
Authors to whom correspondence should be addressed.
Academic Editors: Jonathan Kitchen and Robert Elmes
Materials 2017, 10(3), 227;
Received: 22 December 2016 / Accepted: 17 February 2017 / Published: 24 February 2017
(This article belongs to the Special Issue Luminescent Materials 2017)
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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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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