化工新型材料

化工新型材料 ›› 2023, Vol. 51 ›› Issue (6) : 261-265. DOI: 10.19817/j.cnki.issn1006-3536.2023.06.047

开发与应用

白光g-C₃N₄/CaMoO₄∶Eu³⁺荧光粉的合成及发光性能研究

作者信息 +

Synthesis and luminecence properties of white light g-C₃N₄/CaMoO₄∶Eu³⁺ phosphor

Liu Xiaofeng, Cui Liansheng, Yao Pengfei, Lin Bing, Long Jinqiao

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文章历史 +

Received
2022-02-23
Issue Date	Revised Date
2023-07-07	2022-02-23

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摘要

采用高温固相法合成CaMoO₄∶Eu³⁺红色荧光粉,采用热解法制备g-C₃N₄蓝色荧光粉,并制备复合荧光粉g-C₃N₄/CaMoO₄∶Eu³⁺。利用X射线衍射、荧光光谱分析、热猝灭分析对荧光粉进行了表征。结果表明,CaMoO₄∶Eu³⁺红色荧光和复合荧光粉g-C₃N₄/CaMoO₄∶Eu³的衍射峰与CaMoO₄粉末标准卡PDF#85-1267的衍射峰相匹配。在393nm的激发下,g-C₃N₄在462nm处发蓝绿色光,CaMoO₄∶Eu³⁺在616nm处发红色光。通过改变g-C₃N₄与CaMoO₄∶Eu³⁺的比例,g-C₃N₄/CaMoO₄∶Eu³⁺复合荧光粉的发光颜色可以由蓝色逐渐过渡到红色。在g-C₃N₄用量为1.0%时,CaMoO₄∶0.06Eu³⁺荧光粉发光接近白光,该荧光粉热猝灭过程激活能为0.23eV,具有较好的热稳定性,在白光LED中具有潜在的应用前景。

Abstract

The red phosphor of CaMoO₄∶Eu³⁺ was synthesized by high temperature solid-phase method,the blue phosphor of g-C₃N₄ was prepared by pyrolysis method,and composite phosphor g-C₃N₄/CaMoO₄∶Eu³⁺ was further prepared.The phosphors were characterized by X-ray diffraction,fluorecence spectrum analysis and thermal quenching analysis.The results showed that the diffraction peaks of CaMoO₄∶Eu³⁺ red phosphors and composite phosphors g-C₃N₄/CaMoO₄∶Eu³⁺ matched with the diffraction peaks of CaMoO₄ powder standard card PDF#85-1267.Under the excitation of 393 nm,g-C₃N₄ emitted blue-green light at 462 nm,and CaMoO₄∶Eu³⁺ emitted red light at 616 nm.By changing the ratio of g-C₃N₄ to CaMoO₄∶Eu³⁺,the luminescence color of the composite phosphor could gradually transition from blue to red.When the dosage of g-C₃N₄ was 1.0%,the luminescence of CaMoO₄∶0.06Eu³⁺ fluorescent powder was close to white light,and the activation energy of the phosphor thermal quenching process was 0.23eV,Which had good thermal stability and had potential application prospect in white LED lighting.

关键词

红色荧光粉 / 高温固相法 / 钼酸钙 / 白光

Key words

red phosphor / high temperature solid phase method / calcium molybdate / white light

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白光g-C₃N₄/CaMoO₄∶Eu³⁺荧光粉的合成及发光性能研究[J]. 化工新型材料, 2023, 51(6): 261-265 DOI:10.19817/j.cnki.issn1006-3536.2023.06.047

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