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首页> 外文期刊>Journal of Materials Science >Synthesis, photoluminescence and mechanoluminescence properties of Eu ~(3+) ions activated Ca_2Gd_2W_3O _(14) phosphors
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Synthesis, photoluminescence and mechanoluminescence properties of Eu ~(3+) ions activated Ca_2Gd_2W_3O _(14) phosphors

机译:Eu〜(3+)离子激活的Ca_2Gd_2W_3O _(14)荧光粉的合成,光致发光和机械致发光性质

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摘要

A new series of Eu~(3+) ions-activated calcium gadolinium tungstate [Ca_2Gd_2W_3O_(14)] phosphors were synthesized by conventional solid-state reaction method. The X-ray diffraction patterns of the powder samples indicate that the Eu~(3+): Ca _2Gd_2W_3O_(14) phosphors are of tetragonal structure. The prepared phosphors were well characterized by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), Fourier transform infrared spectroscopy (FTIR), photoluminescence (PL), and mechanoluminescence (ML) spectra. PL spectra of Eu~(3+): Ca _2Gd_2W_3O_(14) powder phosphors have shown strong red emission at 615 nm (~5D_0 → ~7F_2) with an excitation wavelength λ _(exci) = 392 nm (~7F_0 → ~5L _6). The energy transfer from tungstate groups to europium ions has also reported. Mechanoluminescence studies of Eu~(3+): Ca _2Gd_2W_3O_(14) phosphors have also been explained systematically.
机译:通过常规固相反应方法合成了一系列新的Eu〜(3+)离子活化钙calcium钨酸钙[Ca_2Gd_2W_3O_(14)]荧光粉。粉末样品的X射线衍射图谱表明,Eu〜(3+):Ca _2Gd_2W_3O_(14)荧光粉具有四方结构。制备的荧光粉通过扫描电子显微镜(SEM),能量色散X射线分析(EDAX),傅立叶变换红外光谱(FTIR),光致发光(PL)和机械发光(ML)光谱得到了很好的表征。 Eu〜(3+):Ca _2Gd_2W_3O_(14)粉末荧光粉的PL光谱在615 nm(〜5D_0→〜7F_2)处显示出强红色发射,激发波长λ_(exci)= 392 nm(〜7F_0→〜5L) _6)。从钨酸盐团到to离子的能量转移也有报道。 Eu〜(3+):Ca _2Gd_2W_3O_(14)荧光粉的机械发光研究也得到了系统的解释。

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