化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (12) : 79-81.

新材料与新技术

CaWO₄∶Eu³⁺红色荧光粉的制备及其发光性能

孟晓燕, 薛宇韬, 余紫红, 石羽珍, 彭小倩

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Preparation and luminescence property of CaWO∶Eu³⁺ red phosphor

Meng Xiaoyan, Xue Yutao, Yu Zihong, Shi Yuzhen, Peng Xiaoqian

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Received		Published
2019-06-27		2019-12-20
Issue Date	Revised Date
2020-01-03	2019-06-27

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摘要

采用水热法结合高温烧结两步法制备了一系列CaWO₄∶Eu³⁺红色荧光粉。通过X射线衍射(XRD)、扫描电镜(SEM)和荧光光谱(PL)等表征手段对产物结构、形貌以及发光性能进行了表征。结果表明:所合成的 CaWO₄∶Eu³⁺荧光粉均为单一的四方晶系白钨矿结构,可被近紫外光(395nm)有效激发,其发射主峰位于619nm处,归属于Eu³⁺的⁵D₀→⁷F₂电偶极跃迁,且Eu³⁺的最佳掺杂摩尔分数为15%。Ca_0.85WO₄∶0.15Eu³⁺样品形貌为类球形,粒径大小范围为0.1～0.6μm。

Abstract

A series of CaWO₄∶Eu³⁺redphosphors were preparedby hydrothermalcombined with high temperature sintering methods.The crystal structure,morphology and luminescence properties of the samples were characterized by X-ray diffraction (XRD),scanning electron microscopy (SEM) and fluorescence spectrum (PL).The results shown that CaWO₄∶Eu³⁺ phosphors was singletetragonal scheelite structure.The phosphors can be effectively excited by near-UV (395nm),and the major emission peak was located at 619nm due to ⁵D₀→⁷F₂ transition of Eu³⁺.The optimum doping mole fraction of Eu³⁺ was 15%.Ca_0.85WO₄∶0.15Eu³⁺sample was composed of spherical structure with about 0.1～0.6μm in diameter.

关键词

CaWO₄∶Eu³⁺ / 红色荧光粉 / 发光性能 / 稀土

Key words

CaWO₄∶Eu³⁺ / redphosphor / luminescence property / rare earth

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CaWO₄∶Eu³⁺红色荧光粉的制备及其发光性能[J]. 化工新型材料, 2019, 47(12): 79-81 DOI:

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