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Issue 19, 2017
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The structure, anion order, and Ce3+ luminescence of Y4Al2O9–Y4Si2O7N2 solid solutions

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Abstract

Oxonitridoalumosilicates Y4Al2−2xSi2xO9−2xN2x (0.00 ≤ x ≤ 1.00) were prepared and the substitution effect of [Al3+O2−] pairs by [Si4+N3−] pairs in Y4Al2O9–Y4Si2O7N2 solid solutions on the structure and its corresponding influence on the Ce3+ activated luminescence properties are investigated. Y4Al2−2xSi2xO9−2xN2x (0.00 ≤ x ≤ 1.00) shows two solid solution regions, x = 0.00–0.40 for solid solution I, x = 0.50–1.00 for solid solution II from X-ray and neutron diffraction analysis. In the solid solution I, the Ce3+ emission is mainly in the UV range with the maximum wavelength at 350 nm, and the intensity decreases rapidly with the increase of the N content. In the solid solution II, the Ce3+ doped samples show blue-green luminescence with the maximum wavelength at ∼450 nm and the wide excitation bands extend from UV to 450 nm. The phosphors in the solid solution II are promising candidates for white-LED applications.

Graphical abstract: The structure, anion order, and Ce3+ luminescence of Y4Al2O9–Y4Si2O7N2 solid solutions

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Publication details

The article was received on 06 Mar 2017, accepted on 11 Apr 2017 and first published on 12 Apr 2017


Article type: Paper
DOI: 10.1039/C7TC00965H
Citation: J. Mater. Chem. C, 2017,5, 4654-4660
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    The structure, anion order, and Ce3+ luminescence of Y4Al2O9–Y4Si2O7N2 solid solutions

    H. Wei, X. Wang, X. Kuang, C. Wang, H. Jiao and X. Jing, J. Mater. Chem. C, 2017, 5, 4654
    DOI: 10.1039/C7TC00965H

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