Synthesis, crystal structure and luminescent properties of titanium(IV)-doped calcium borostannates, CaSn1―xTix(BO3)2
Synthesis, crystal structure and luminescent properties of titanium(IV)-doped calcium borostannates, CaSn1―xTix(BO3)2
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DOI：
10.1016/j.jallcom.2009.10.034
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发表时间：
2010-02
影响因子：
6.2
通讯作者：
Tetsuya Kawano;H. Yamane
中科院分区：
文献类型：
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作者：
Tetsuya Kawano;H. Yamane
CaO-B2O3-SnO2 体系中的化合物是在空气中于 700-1100°C 下通过固相反应制备的。通过粉末 X 射线衍射 (XRD) 研究了该体系中的相关系。在此系统中合成了先前报道的硼锡酸钙CaSn(BO3)2(菱面体，R3´ (No. 148)，Z=3，a=4.85872(3)，c=16.07750(11) Å)。制备钛(IV)掺杂固溶体CaSn1−xTix(BO3)2(0<x<0.30)，并通过Rietveld方法精修其晶胞参数。在 CaSn1−xTix(BO3)2 的光致发光 (PL) 光谱中观察到 489 nm 处的宽蓝绿色发射。测量CaSn0.99Ti0.01(BO3)2 的最大发射强度。 CaSn0.99Ti0.01(BO3)2的PL激发峰在263nm(4.71eV)处观察到。
Compounds in the CaO–B2O3–SnO2system were prepared by solid-state reaction at 700–1100°C in air. The phase relations in this system were investigated by powder X-ray diffraction (XRD). A previously reported calcium borostannnate, CaSn(BO3)2(rhombohedral, R3¯ (No. 148), Z=3, a=4.85872(3), c=16.07750(11) Å), was synthesized in this system. Titanium(IV)-doped solid solutions, CaSn1−xTix(BO3)2(0<x<0.30), were prepared, and their cell parameters were refined by the Rietveld method. A broad blue-green emission at 489nm was observed in the photoluminescence (PL) spectra of CaSn1−xTix(BO3)2. The maximum emission intensity was measured for CaSn0.99Ti0.01(BO3)2. The PL excitation peak of CaSn0.99Ti0.01(BO3)2was observed at 263nm (4.71eV).