Publication Date:
2015-09-25
Description:
Y 4 Si 2 O 7 N 2 : Eu 2+ phosphor has been prepared by a pretreatment method. Reduction in Eu 3+ ions into Eu 2+ by the use of hydrogen iodide (HI) is verified by X-ray absorption near-edge structure (XANES) and electrode potential analysis. Y 4 Si 2 O 7 N 2 : Eu 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 4 Si 2 O 7 N 2 : Eu 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 4 Si 2 O 7 N 2 : Eu 2+ phosphors. Prospectively, the pretreatment approach could be extended to develop other Eu 2+ -doped compounds.
Print ISSN:
0002-7820
Electronic ISSN:
1551-2916
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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