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Synthesis, structural and optical characterization of Eu:KYb(WO_4)_2 nanocrystals: A promising red phosphor

机译:Eu:KYb(WO_4)_2纳米晶体的合成,结构和光学表征:一种有前途的红色荧光粉

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摘要

The modified Pechini method was used to synthesize europium-doped potassium ytterbium tungstate, 50 at.% Eu in KYb(WO_4)_2, nanocrystals. This method is based on polyesterification between ethylenedi-aminetetraacetic acid and ethylene glycol, which produces the material at low temperature (1073 K). The structural characterization study was carried out by X-ray powder diffraction analysis and showed that the nanocrystals crystallized in a monoclinic system with the space group C2/c and unit cell parameters a = 10.667(2)A; b = 10.437(2)A; c = 7.585(1)A; β= 130.866(8)°, Z=4. The mean and the particle size dispersion were studied by the Scherrer's equation and electron microscopy. Optical absorption and emission were performed in order to obtain a detailed spectroscopic study of trivalent europium in the monoclinic double tungstate nanocrystals.
机译:改进的Pechini方法用于合成KYb(WO_4)_2纳米晶体中50原子%Eu的euro掺杂钨酸钾钨。该方法基于乙二胺四乙酸与乙二醇之间的聚酯化作用,从而在低温(1073 K)下生产该材料。通过X射线粉末衍射分析进行结构表征研究,结果表明,纳米晶体在单斜晶系系统中结晶,空间群为C2 / c,晶胞参数为a = 10.667(2)A; b = 10.437(2)A; c = 7.585(1)A; β= 130.866(8)°,Z = 4。通过Scherrer方程和电子显微镜研究了平均值和粒径分散。进行光吸收和发射是为了获得单斜双钨酸盐纳米晶体中三价euro的详细光谱研究。

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