Synthesis, Crystal Structure, and Luminescence Properties of Y sub(4)Si sub(2)O sub(7)N sub(2): Eu super(2+) Oxynitride Phosphors

Y sub(4)Si sub(2)O sub(7)N sub(2): Eu super(2+) phosphor has been prepared by a pretreatment method. Reduction in Eu super(3+) ions into Eu super(2+) by the use of hydrogen iodide (HI) is verified by X-ray absorption near-edge structure (XANES) and electrode potential analysis. Y sub(4)Si sub(2)O su...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2016-01, Vol.99 (1), p.183-190
Main Authors: Chen, Guozhang, Yin, Liang-Jun, Dong, Jun-Tao, Feng, Yan-Yu, Gao, Yang, He, Weidong, Jia, Yu, Xu, Xin, Hintzen, Hubertus T
Format: Article
Language:English
Subjects:
Absorption
Doping
Emission
Iodides
Luminescence
Phosphors
Pretreatment
Quenching
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Summary:Y sub(4)Si sub(2)O sub(7)N sub(2): Eu super(2+) phosphor has been prepared by a pretreatment method. Reduction in Eu super(3+) ions into Eu super(2+) by the use of hydrogen iodide (HI) is verified by X-ray absorption near-edge structure (XANES) and electrode potential analysis. Y sub(4)Si sub(2)O sub(7)N sub(2): Eu super(2+) phosphor has a broad emission band in the range of 400-500 nm. Furthermore, the effect of Zr doping on the structure and luminescence properties of Y sub(4)Si sub(2)O sub(7)N sub(2): Eu super(2+) phosphor is researched. It found that the Zr doping leads to an emission blueshift, and improves the luminescence intensity and thermal quenching behavior of Y sub(4)Si sub(2)O sub(7)N sub(2): Eu super(2+) phosphors. Prospectively, the pretreatment approach could be extended to develop other Eu super(2+)-doped compounds.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.13936