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Issue 16, 2013
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A direct warm-white-emitting Sr3Sc(PO4)3:Eu2+, Mn2+ phosphor with tunable photoluminescence via efficient energy transfer

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Abstract

A broadband direct warm-white-emitting phosphor Sr3Sc(PO4)3:Eu2+, Mn2+ (SSP:Eu2+, Mn2+) was prepared by a solid-state reaction. The powder X-ray diffraction data, photoluminescence spectra, fluorescence decay curves, quantum efficiency, and chromaticity coordinates of the obtained phosphors were measured and discussed in detail. The results reveal that there is efficient energy transfer from the Eu2+ to the Mn2+ ions and the broadband direct warm-white-light comes from the emissions of the Eu2+ and Mn2+ ions. The possible energy transfer mechanism was proposed in terms of the experimental results and analysis. We demonstrate the ability to tune the color tone, the correlated color temperature (CCT), and the chromaticity coordinates which can approach the color properties required for solid state lighting. The developed phosphors can be efficiently excited in the UV region and exhibit a warm-white-light emission, making them attractive as single-component white-light-emitting conversion phosphors for UV-based white light emitting diodes.

Graphical abstract: A direct warm-white-emitting Sr3Sc(PO4)3:Eu2+, Mn2+ phosphor with tunable photoluminescence via efficient energy transfer

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Publication details

The article was received on 08 Dec 2012, accepted on 10 Jan 2013 and first published on 14 Jan 2013


Article type: Paper
DOI: 10.1039/C3DT32946A
Citation: Dalton Trans., 2013,42, 5649-5654

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    A direct warm-white-emitting Sr3Sc(PO4)3:Eu2+, Mn2+ phosphor with tunable photoluminescence via efficient energy transfer

    N. Guo, Y. Jia, W. Lü, W. Lv, Q. Zhao, M. Jiao, B. Shao and H. You, Dalton Trans., 2013, 42, 5649
    DOI: 10.1039/C3DT32946A

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