The reduction of Eu~(3+) to Eu~(2+) in BaMgSiO_4:Eu prepared in air and the luminescence of BaMgSiO_4:Eu~(2+) phosphor

Mingying Peng; Zhiwu Pei; Guangyan Hong; Qiang Su

首页> 外文期刊>Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology >The reduction of Eu~(3+) to Eu~(2+) in BaMgSiO_4:Eu prepared in air and the luminescence of BaMgSiO_4:Eu~(2+) phosphor

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The reduction of Eu~(3+) to Eu~(2+) in BaMgSiO_4:Eu prepared in air and the luminescence of BaMgSiO_4:Eu~(2+) phosphor

机译：空气中制备的BaMgSiO_4：Eu中Eu〜（3+）还原为Eu〜（2+）和BaMgSiO_4：Eu〜（2+）荧光粉的发光

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The reduction of Eu~(3+) to Eu~(2+) in air has been observed in a silicate matrix for the time in BaMgSiO_4:Eu prepared by high-temperature solid-state reaction. Emission and excitation spectra were employed to detect the presence of Eu~(2+) ions in the compound and this reduction was explained by a charge compensation model proposed previously. In BaMgSiO_4:Eu~(2+), Eu~(2+) ions occupy three different lattice sites by substitution for Ba~(2+) ions. Eu~(2+) ions on Ba(1) and Ba(2) sites gave emissions at about 500 nm while that on Ba(3) site showed an emission band at 398 nm. All the emissions of Eu~(2+) ions in BaMgSiO_4:Eu~(2+) were not quenched at room temperature.

机译：在通过高温固态反应制备的BaMgSiO_4：Eu中的一段时间内，在硅酸盐基质中观察到空气中Eu〜（3+）还原为Eu〜（2+）。发射光谱和激发光谱被用来检测化合物中Eu〜（2+）离子的存在，这种减少可以通过先前提出的电荷补偿模型来解释。在BaMgSiO_4：Eu〜（2+）中，Eu〜（2+）离子通过替换Ba〜（2+）离子占据三个不同的晶格位。 Ba（1）和Ba（2）上的Eu〜（2+）离子在约500 nm处发射，而Ba（3）上的Eu〜（2+）离子在398 nm处发射。 BaMgSiO_4：Eu〜（2+）中所有Eu〜（2+）离子的发射未在室温下猝灭。

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《Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology》 |2003年第5期|共4页
作者
Mingying Peng; Zhiwu Pei; Guangyan Hong; Qiang Su;
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1. The reduction of Eu~(3+) to Eu~(2+) in BaMgSiO_4:Eu prepared in air and the luminescence of BaMgSiO_4:Eu~(2+) phosphor [J] . Mingying Peng, Zhiwu Pei, Guangyan Hong, Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology . 2003,第5期

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The reduction of Eu~(3+) to Eu~(2+) in BaMgSiO_4:Eu prepared in air and the luminescence of BaMgSiO_4:Eu~(2+) phosphor

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