Preparation of a novel red Rb2SiF6:Mn4+ phosphor with high thermal stability through a simple one-step approach
Preparation of a novel red Rb2SiF6:Mn4+ phosphor with high thermal stability through a simple one-step approach
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DOI：
10.1039/c5tc01396h
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发表时间：
2015-01-01
影响因子：
6.4
通讯作者：
Liu, Ru-Shi
中科院分区：
文献类型：
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作者：
Fang, Mu-Huai;Hoang-Duy Nguyen;Liu, Ru-Shi
采用一步共沉淀法成功合成了一种新型Rb2SiF6:Mn4+荧光粉。在适当的反应温度下，向溶液中加入H2O2，使Mn7+还原为Mn4+。Mn4+被紫外光和蓝光激发，在大约630 nm处发出清晰的红光。Rb2SiF6:Mn4+具有Fm(3)大于barm（225）的立方相晶体结构，通过x射线衍射和全图分析方案确定。在x射线衍射谱中未发现明显的杂质相。所有的发光特性，即发射光谱、激发光谱和热发光光谱，都进行了深入的研究。
A new Rb2SiF6:Mn4+ phosphor has been successfully synthesized through a one-step co-precipitation method. The addition of H2O2 into the solution with appropriate reaction temperature results in the reduction of Mn7+ to Mn4+. Mn4+ is excited by UV and blue light, providing sharp red emission at approximately 630 nm. Rb2SiF6:Mn4+ has a Fm (3) over barm (225) cubic phase crystal structure as determined using X-ray diffraction and Total Pattern Analysis Solutions. No apparent impurity phase is found in the X-ray diffraction spectrum. All luminescence properties, namely, emission, excitation, and thermal luminescence spectrum, have been investigated in depth.