化工新型材料

化工新型材料 ›› 2020, Vol. 48 ›› Issue (6) : 85-87.

新材料与新技术

单一基质白光荧光粉CaWO₄∶Dy³⁺的合成及荧光性能研究

任宇芬, 董兴邦, 王征, 朱祥

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Synthesis and property of single-phase white light-emitting CaWO₄∶Dy³⁺

Ren Yufen, Dong Xingbang, Wang Zheng, Zhu Xiang

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文章历史 +

Received		Published
2019-10-30		2020-06-20
Issue Date	Revised Date
2020-07-02	2019-10-30

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摘要

采用高温固相法,成功制备了Dy³⁺离子掺杂的CaWO₄∶Dy³⁺发光材料。利用X射线衍射、拉曼光谱和荧光光谱对其结构和荧光性能进行表征,探讨了Dy³⁺浓度对CaWO₄∶Dy³⁺结构和发光性能的影响。结果表明:Dy³⁺可以有效掺入到CaWO₄基质中,且不改变基质原有的晶体结构,获得单一的白钨矿结构。用基质吸收峰激发CaWO₄∶Dy³⁺晶体,由发射谱推测样品中基质和Dy³⁺之间存在能量传递。对比不同掺杂浓度下Dy³⁺的离子发射光谱,发现随掺杂浓度的不同,480nm(蓝)和575nm(黄)的发射强度有明显变化,证实浓度为4%(摩尔分数)时强度达最大。

Abstract

The Dy³⁺ doped CaWO₄∶Dy³⁺ samples were prepared by high-temperature solid-state method.The crystal phase of the CaWO₄∶Dy³⁺ were characterized by X-ray diffraction(XRD),raman and fluorescence spectrophotometer.The effect of Dy³⁺ doping on the crystal phase and luminescence properties of the CaWO₄∶Dy³⁺ were studied.Results revealed that Dy³⁺ can effectively be doped into CaWO₄ matrix,and did not change the original crystal structure of CaWO₄,obtaining the single scheelite structure.The emission spectra of CaWO₄∶Dy³⁺ was excited by the absorption peak of the host,the energy transfer was observed between the CaWO₄ host and the rare earth ions Dy³⁺.Comparing the emission spectra of Dy³⁺ ions with different doping concentrations,it was found that the emission intensity of 480nm(blue) and 575nm(yellow) changed significantly,which proved that the intensity reached the maximum when the concentration was 4% (molar fraction).

关键词

高温固相法 / CaWO₄∶Dy³⁺ / 荧光性能

Key words

high-temperature solid-state method / CaWO₄∶Dy³⁺ / luminescence property

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单一基质白光荧光粉CaWO₄∶Dy³⁺的合成及荧光性能研究[J]. 化工新型材料, 2020, 48(6): 85-87 DOI:

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