紫外激发GdNbO4:Tb3+色度可调荧光粉的制备和发光性能的研究

doi:10.12052/gdutxb.160171

广东工业大学学报 ›› 2017, Vol. 34 ›› Issue (05): 91-95.doi: 10.12052/gdutxb.160171

紫外激发GdNbO₄:Tb³⁺色度可调荧光粉的制备和发光性能的研究

张璐, 易双萍, 赵韦人, 胡小雪

广东工业大学物理与光电工程学院, 广东广州 51006

收稿日期:2016-12-15 出版日期:2017-09-09 发布日期:2017-07-10
作者简介:张璐(1990-)女,硕士研究生,主要研究方向为无机非金属光电材料.
基金资助:
广东省科技发展专项（2016A010103029）；广州市科技计划项目科学研究专项（201607010179）

Synthesis and Photoluminescence Properties of Multicolor Tunable GdNbO₄: Tb³⁺ Phosphors

Zhang Lu, Yi Shuang-ping, Zhao Wei-ren, Hu Xiao-xue

School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 51006, China

Received:2016-12-15 Online:2017-09-09 Published:2017-07-10

摘要/Abstract

摘要： 采用高温固相法制备了GdNbO₄：Tb³⁺荧光粉，系统地分析了该荧光粉的物相组成、漫反射光谱、荧光光谱以及荧光寿命衰减曲线.GdNbO4作为一种自激活发光的荧光粉，在200~325 nm范围有很宽的吸收.当掺杂了Tb³⁺之后，掺杂离子会占据基质的格点位置并伴有基质到Tb³⁺的能量转移.与此同时，基质在紫外区域的吸收会变强.通过研究计算分析可得激活剂Tb³⁺的电偶极矩-电偶极矩相互作用是发生浓度猝灭的原因.

关键词: GdNbO₄, 光致发光, 能量传递

Abstract: A color-tunable phosphor based on Tb³⁺ doped GdNbO₄ were synthesized by a traditional solid-state reaction method. X-ray powder diffraction (XRD), diffused reflectance spectra, photoluminescence spectra and decay curves were utilized to characterize the as-prepared phosphors. The GdNbO₄ host was proved to be a self-activated phosphor with broad absorption range from 200 to 325 nm. When Tb³⁺ ions were doped into the host lattice, the energy transfer from host to Tb³⁺ was identified. And the broad absorption in the UV region was changed and enhanced. Furthermore, the electric dipole-dipole interaction is the major mechanism for the concentration quenching.

Key words: GdNbO₄, photoluminescence, energy transfer

中图分类号:

TB321

张璐, 易双萍, 赵韦人, 胡小雪. 紫外激发GdNbO₄:Tb³⁺色度可调荧光粉的制备和发光性能的研究[J]. 广东工业大学学报, 2017, 34(05): 91-95.

Zhang Lu, Yi Shuang-ping, Zhao Wei-ren, Hu Xiao-xue. Synthesis and Photoluminescence Properties of Multicolor Tunable GdNbO₄: Tb³⁺ Phosphors[J]. Journal of Guangdong University of Technology, 2017, 34(05): 91-95.

参考文献 18

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紫外激发GdNbO₄:Tb³⁺色度可调荧光粉的制备和发光性能的研究

Synthesis and Photoluminescence Properties of Multicolor Tunable GdNbO₄: Tb³⁺ Phosphors

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