Synthesis, Crystal Structure, and Luminescence Properties of Y4Si2O7N2: Eu2+ Oxynitride Phosphors
Synthesis, Crystal Structure, and Luminescence Properties of Y4Si2O7N2: Eu2+ Oxynitride Phosphors
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Y4Si2O7N2: Eu2 氮氧化物荧光粉的合成、晶体结构及发光性能
DOI：
10.1111/jace.13936
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发表时间：
2016-01-01
影响因子：
3.9
通讯作者：
Hintzen, Hubertus T. (Bert)
中科院分区：
文献类型：
--
作者：
Chen, Guozhang;Yin, Liang-Jun;Hintzen, Hubertus T. (Bert)
采用预处理法制备了Y4Si2O7N2: Eu2+荧光粉。利用x射线吸收近边结构（XANES）和电极电位分析证实了碘化氢（HI）将Eu3+离子还原为Eu2+。Y4Si2O7N2: Eu2+荧光粉在400 ~ 500 nm范围内具有较宽的发射带。进一步研究了Zr掺杂对Y4Si2O7N2: Eu2+荧光粉结构和发光性能的影响。研究发现，Zr掺杂导致了Y4Si2O7N2: Eu2+荧光粉的发射蓝移，提高了Y4Si2O7N2: Eu2+荧光粉的发光强度和热猝灭性能。展望未来，预处理方法可以扩展到开发其他Eu2+掺杂化合物。
Y4Si2O7N2: Eu2+ phosphor has been prepared by a pretreatment method. Reduction in Eu3+ ions into Eu2+ by the use of hydrogen iodide (HI) is verified by X-ray absorption near-edge structure (XANES) and electrode potential analysis. Y4Si2O7N2: Eu2+ 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 Y4Si2O7N2: Eu2+ phosphor is researched. It found that the Zr doping leads to an emission blueshift, and improves the luminescence intensity and thermal quenching behavior of Y4Si2O7N2: Eu2+ phosphors. Prospectively, the pretreatment approach could be extended to develop other Eu2+-doped compounds.