YVO4:Eu3+@YPO4纳米核壳结构荧光粉的水热合成及表征

doi:10.3724/SP.J.1077.2012.11476

无机材料学报 ›› 2012, Vol. 27 ›› Issue (7): 706-710.DOI: 10.3724/SP.J.1077.2012.11476

YVO₄:Eu³⁺@YPO₄纳米核壳结构荧光粉的水热合成及表征

吴珂^1,2, 王乐^1,2,3, 徐国堂³, 邹世碧³, 黄杰³, 顾培夫², 梁培³

(1．浙江大学工学部, 杭州 310027; 2. 浙江大学信息学部, 杭州 310027; 3. 中国计量学院光学与电子科技学院, 杭州 310018)

收稿日期:2011-08-08 修回日期:2011-10-27 出版日期:2012-07-20 网络出版日期:2012-06-06
作者简介:吴珂(1979-), 博士, 助理研究员. E-mail: wuke@zju.edu.cn
基金资助:
国家自然科学青年基金(61006051、61177050、61154002); 浙江省自然科学基金重点项目(Y407370、Y6100244、Z1110222)

Hydrothermal Method Synthesis and Characterization of YVO₄:Eu³⁺@YPO₄ Core-shell Phosphor

WU Ke^1,2, WANG Le^1,2,3, XU Guo-Tang³, ZOU Shi-Bi³, HUANG Jie³, GU Pei-Fu², LIANG Pei³

(1. Faculty of Engineering, Zhejiang University, Hangzhou 310027, China; 2. Faculty of Information Technology, Zhejiang University, Hangzhou 310027, China; 3. College of Optics and Electronic Science and Technology, China Jiliang University, Hangzhou 310018, China)

Received:2011-08-08 Revised:2011-10-27 Published:2012-07-20 Online:2012-06-06
About author:WU Ke. E-mail: wuke@zju.edu.cn
Supported by:
Young Scientists Fund of the National Natural Science Foundation of China (61006051, 61177050, 61154002); Natural Science Foundation of Zhejiang Province, China (Y407370, Y6100244, Z1110222)

摘要/Abstract

摘要： 为了提高传统YVO₄:Eu³⁺荧光粉的发光效率及稳定性, 采用水热法制备合成了YVO₄:Eu³⁺@YPO₄纳米核壳结构荧光粉, 通过X射线衍射仪(XRD)、透射电镜(TEM)和荧光光谱仪(PL)等测试手段对所得样品进行表征. XRD和TEM测试结果表明: 由水热法合成的YVO₄:Eu³⁺@YPO₄荧光粉包含YVO₄:Eu³⁺核心和YPO₄壳层两种结构, 荧光粉粒径为10~30 nm, 壳厚为5~10 nm, 形态规则、粒径均匀、结晶度高; 荧光光谱测试结果表明: YVO₄:Eu³⁺@YPO₄荧光粉比单纯YVO₄:Eu³⁺荧光粉的发光效率高出66.75%, 且具有较高的色纯度. 结合第一性原理方法, 对YVO₄和YPO₄晶体的能带结构进行理论计算, 定性说明了电子跃迁和发光的关系.

关键词: 荧光粉, 纳米核壳结构, 水热合成

Abstract: In order to improve the stability and luminous efficiency of YVO₄:Eu³⁺ phosphor, YVO₄:Eu³⁺@YPO4 nano core-shell phosphor was prepared by using hydrothermal method. X-ray diffraction (XRD), transmission electron microscope (TEM), and photoluminescence spectra were used to characterize the feature of YVO₄:Eu³⁺@YPO₄ core-shell phosphor. The XRD and TEM results indicate that the synthetic products are composed of the YVO4:Eu3+ core and YPO4 shell. The core-shell phosphor with diameter of 10–30 nm and shell thickness of 5–10 nm, regular crystalline morphologies, highly uniform in size and distribution, high degree of crystallinity. The photoluminescence spectra show that the luminous efficiency of YVO₄:Eu³⁺@YPO₄ core-shell phosphor is 66.75% higher than that of YVO₄:Eu³⁺ phosphor, which also has high color purity. Furthermore, the first principle calculation is used to calculate the band-structure of the YVO₄ and YPO₄ crystals. On base of the calculated result, the relationship between the electron transition and the luminance is illustrated.

Key words: phosphor, nano core-shell structure, hydrothermal synthesis

中图分类号:

O761

吴珂, 王乐, 徐国堂, 邹世碧, 黄杰, 顾培夫, 梁培. YVO₄:Eu³⁺@YPO₄纳米核壳结构荧光粉的水热合成及表征[J]. 无机材料学报, 2012, 27(7): 706-710.

WU Ke, WANG Le, XU Guo-Tang, ZOU Shi-Bi, HUANG Jie, GU Pei-Fu, LIANG Pei. Hydrothermal Method Synthesis and Characterization of YVO₄:Eu³⁺@YPO₄ Core-shell Phosphor[J]. Journal of Inorganic Materials, 2012, 27(7): 706-710.

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YVO₄:Eu³⁺@YPO₄纳米核壳结构荧光粉的水热合成及表征

Hydrothermal Method Synthesis and Characterization of YVO₄:Eu³⁺@YPO₄ Core-shell Phosphor

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