Molten salt synthesis of Zn1.8Mn0.2SiO4 luminescent materials in NaCl–ZnCl2 eutectic salt
Molten salt synthesis of Zn1.8Mn0.2SiO4 luminescent materials in NaCl–ZnCl2 eutectic salt
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DOI：
10.1016/j.ceramint.2016.01.037
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发表时间：
2016-05
影响因子：
5.2
通讯作者：
Guiqing Hu;Wenyao Li;Guanjie He;Jingru Wang;Yanhong Zhao;Yan Zhang;B. Yao
中科院分区：
文献类型：
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作者：
Guiqing Hu;Wenyao Li;Guanjie He;Jingru Wang;Yanhong Zhao;Yan Zhang;B. Yao
A low-temperature molten salt method has been used to synthesis Zn2SiO4:Mn (ZSM) powders in NaCl–ZnCl2eutectic salts by using calcined SBA-15 as silica source without any post-treatment. Characterizations of the samples were carried out by X-ray diffraction, high resolution selection electron microscopy, Raman Spectroscopy and Photoluminescence. Our study revealed that the well crystalline ZSM was obtained at 450 °C, much lower than the conventional solid-state reaction temperature but also get better crystallinity when the temperature increased to 500 °C. The SEM micrographs of ZSM are comprised of irregular rod-like structure with different length–diameter ratio, which showed the average length is about 1 μm and the average diameter is around 100 nm. Besides, the UV excitation spectra showed that the ZSM phosphor exhibited a strong green emission around 527 nm and reached the highest luminescence intensity with the Mn doping concentration of 0.2. In addition, the luminescence decay time of Zn1.8Mn0.2SiO4(x=0.2) around 527 nm lasted for 14.25 ms upon 245 nm excitation.
