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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Hybrid precursors synthesis and optical properties of LnNbO_4:Bi~(3+) blue phosphors and Bi~(3+) sensitizing of on Dy~(3+)'s luminescence in YnbO_4 matrix
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Hybrid precursors synthesis and optical properties of LnNbO_4:Bi~(3+) blue phosphors and Bi~(3+) sensitizing of on Dy~(3+)'s luminescence in YnbO_4 matrix

机译：YnbO_4基质中LnNbO_4：Bi〜（3+）蓝色荧光粉的杂化前驱体合成及其光学性质和Bi〜（3+）对Dy〜（3+）发光的敏化。

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摘要

In this paper, Bi~(3+) doped with LnNbO_4:Bi~(3+) (Ln = La, Gd and Y) and LnNbO_4:Bi~(3+), Dy~(3+) phosphors have been synthesized by a modified chemical co-precipitation process with hybrid precursors. Their micromorphology and particle sizes were characterized by X-ray diffraction (XRD) and scanning electronic microscopy (SEM). The photoluminescence data for LnNbO_4:Bi~(3+) indicated that the emission peak positions for Bi~(3+) showed red-shifts comparing to that of NbO_4~(3-) for undoped LnNbO_4 hosts. Besides this, it was found that Bi ion can enhance the emission intensity of Dy~(3+) in YTNFbO_4 host lattice when the Bi ion concentration is lower than 3 mol percent. Moreover, the influence of Bi~(3+) concentration on the luminescent properties of YnbO_4 was examined, which shows that the optimum concentration was 1 mol percent and concentration quenching occurred.
机译：本文通过掺杂LnNbO_4：Bi〜（3+）（Ln = La，Gd和Y）和LnNbO_4：Bi〜（3+）掺杂了Bi〜（3 +），Dy〜（3+）荧光粉。混合前体的改进化学共沉淀过程。通过X射线衍射（XRD）和扫描电子显微镜（SEM）表征它们的微观形态和粒度。 LnNbO_4：Bi〜（3+）的光致发光数据表明，与未掺杂的LnNbO_4主体的NbO_4〜（3-）相比，Bi〜（3+）的发射峰位置呈现红移。除此之外，发现当Bi离子浓度低于3mol％时，Bi离子可以增强YTNFbO_4主体晶格中Dy〜（3+）的发射强度。另外，考察了Bi〜（3+）浓度对YnbO_4发光性能的影响，表明最佳浓度为1 mol％，发生了浓度猝灭。

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