Synthesis and photoluminescence properties of Y1-x(P0.6V0.4)O4:xEu3+ red-emitting phosphors
Synthesis and photoluminescence properties of Y1-x(P0.6V0.4)O4:xEu3+ red-emitting phosphors
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Y1-x(P0.6V0.4)O4:xEu3红光荧光粉的合成及光致发光性能
DOI：
10.1007/s10854-017-7964-5
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Jie Tang
中科院分区：
文献类型：
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作者：
Yalin Xu;Bing Teng;Degao Zhong;Liang Yang;Jie He;Yao Meng;Min Zhu;Jie Tang
采用化学共沉淀法合成了不同Eu 3+掺杂浓度（x= 0.01，0.02，0.03，0.04，0.05，0.06，0.07，0.10，0.13，0.15）的Y1−x（P0.6V0.4）O 4：xEu 3+荧光粉。采用X射线衍射（XRD）、扫描电子显微镜（SEM）、红外光谱、光致发光光谱和发射光谱等对合成的荧光粉进行了表征。XRD结果表明，样品属于四方晶系，Eu 3+成功地掺杂到晶格中，没有改变晶格结构。红外光谱表明，所有的多磷酸盐和多钒酸盐转化为正磷酸盐和正钒酸盐，分别。在350 nm激发波长下，在400-650 nm范围内，发射光谱出现Eu 3+离子的5D 0 → 7 FJ（J= 0-2）跃迁。与YPO 4：Eu 3+荧光粉相比，在基质中引入VO 43-，对应于Eu 3 + 5D 0 → 7 F2跃迁的强度在619 nm处，发射纯红光。当Eu ~（3+）离子浓度为0.05时，荧光粉的发光强度达到最大值，然后随着Eu ~（3+）离子浓度的增加，荧光粉的发光强度逐渐降低，这是由于再吸收效应引起的浓度猝灭所致。结果表明，该荧光粉作为红光荧光粉在紫外泵浦白色发光二极管（LED）中具有一定的应用价值。
Y1−x(P0.6V0.4)O4:xEu3+phosphors with different dopant concentration of Eu3+(x= 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.10, 0.13, 0.15) have been synthesized via chemical coprecipitation method. The consequent phosphors were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), infrared spectroscopy, photoluminescence excitation and emission spectra. The results of XRD indicate that the samples belong to tetragonal system, and Eu3+are successfully doped into the lattice without changing the lattice structure. Infrared spectroscopy reveal that all polyphosphates and polyvanadates are transformed to orthophosphates and orthovanadates, respectively. Under excitation wavelength at 350 nm, the emission spectra exhibit the5D0→7FJ(J= 0–2) transitions belonged to Eu3+ions in the region of 400–650 nm. Compared with YPO4:Eu3+phosphors, the introduction of VO43−into the matrix, which corresponding to the intensity of Eu3+ 5D0→7F2transition located at 619 nm, and emitting pure red light, can be significantly increased. The emission intensity of the phosphors first reach the maximum when the concentration of Eu3+is 0.05, and then decreases with increasing of Eu3+ions concentration, this is resulting from concentration quenching caused by the reabsorption effect. The results indicate that the obtained phosphors have a certain application as red light emitting phosphors in ultraviolet-pumped white light-emitting diodes (LEDs).