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

Ziyao WANG; Yangai LIU; Jian CHEN; Minghao FANG; Zhaohui HUANG; Lefu MEI

doi:10.1007/s40145-017-0220-x

Journal of Advanced Ceramics 2017, 6(2): 81-89 https://doi.org/10.1007/s40145-017-0220-x

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Open Access | Issue | Published: 06 May 2017

Color tunable Ba_0.79Al_10.9O_17.14:xEu phosphor prepared in air via valence state control

Show Author's Information Hide Author's Information Ziyao WANG^{^a}, Yangai LIU^{^a}(

), Jian CHEN^{^a}, Minghao FANG^{^a}, Zhaohui HUANG^{^a}, Lefu MEI^{^a}

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

Keywords:

tunable, luminescence, phosphor, Ba_0.79Al_10.9O_17.14, self-reduction

Cite this article:

WANG Z, LIU Y, CHEN J, et al. Color tunable Ba_0.79Al_10.9O_17.14: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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Abstract

A series of luminescent Ba_0.79Al_10.9O_17.14: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 ⁵D₀-⁷F_J (J = 1, 2, 3, 4) of Eu³⁺. The related mechanism of self-reduction was discussed in detail. The color of the Ba_0.79Al_10.9O_17.14: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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Color tunable Ba_0.79Al_10.9O_17.14:xEu phosphor prepared in air via valence state control

Show Author's information Hide Author's Information Ziyao WANG^{^a}, Yangai LIU^{^a}(

), Jian CHEN^{^a}, Minghao FANG^{^a}, Zhaohui HUANG^{^a}, Lefu MEI^{^a}

Abstract

Keywords: tunable, luminescence, phosphor, Ba_0.79Al_10.9O_17.14, self-reduction

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Acknowledgements

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Publication history

Received: 24 December 2016

Revised: 26 February 2017

Accepted: 27 February 2017

Published: 06 May 2017

Issue date: June 2017

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Acknowledgements

We thank the National Natural Science Foundation of China (Grant No. 51472223), the Program for New Century Excellent Talents in University of Ministry of Education of China (Grant No. CET-12-0951), and the Fundamental Research Funds for Central Universities (Grant No. 2652015090).

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