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Research Article | Open Access

Color tunable Ba0.79Al10.9O17.14:xEu phosphor prepared in air via valence state control

Ziyao WANGaYangai LIUa( )Jian CHENaMinghao FANGaZhaohui HUANGaLefu MEIa
Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
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Abstract

A series of luminescent Ba0.79Al10.9O17.14:xEu (x = 0.005-0.12) phosphors were prepared by high-temperature solid-state reaction in air atmosphere. The coexistence of Eu2+ and Eu3+ was observed and verified by photoluminescence (PL) and photoluminescence excitation (PLE) spectra, X-ray photoelectron spectra (XPS), and diffuse reflection spectra. The band emission peaking at 430 nm was assigned to 4F65D-4F7 transition of Eu2+, and another four emissions peaking at 589, 619, 655, and 704 nm were attributed to 4F-4F transitions of 5D0-7FJ (J = 1, 2, 3, 4) of Eu3+. The related mechanism of self-reduction was discussed in detail. The color of the Ba0.79Al10.9O17.14:xEu phosphors could be shifted from blue (0.23, 0.10) to red (0.42, 0.27) by doping Li+ ions, and the temperature dependence properties were investigated.

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Journal of Advanced Ceramics
Pages 81-89
Cite this article:
WANG Z, LIU Y, CHEN J, et al. Color tunable Ba0.79Al10.9O17.14:xEu phosphor prepared in air via valence state control. Journal of Advanced Ceramics, 2017, 6(2): 81-89. https://doi.org/10.1007/s40145-017-0220-x

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Received: 24 December 2016
Revised: 26 February 2017
Accepted: 27 February 2017
Published: 06 May 2017
© The author(s) 2017

Open Access The articles published in this journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons. org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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