化工新型材料

化工新型材料 ›› 2023, Vol. 51 ›› Issue (2) : 239-244. DOI: 10.19817/j.cnki.issn1006-3536.2023.02.048

开发与应用

Dy³⁺/Tm³⁺掺杂Na₂Gd(PO₄)(WO₄)的制备及发光性能研究

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Preparation and luminescence properties of Dy³⁺/Tm³⁺ doped Na₂Gd(PO₄)(WO₄) phosphors

Lin Xiangyu^1,2, Meng Xianguo^1,2, Xu Yingchao^1,2, Zhou Qiong^1,2, Liu Chunhui^1,2, Wu Panpan^1,2, Wang Mingming^1,2, Wang Jiawei^1,2

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Received		Published
2021-10-15		2023-02-20
Issue Date	Revised Date
2023-03-01	2021-10-15

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摘要

采用二次熔融的高温固相法合成了一系列Dy³⁺/Tm³⁺共掺钠-钆-磷钨酸盐(NGPW)荧光材料,研究了其光致发光特性和热稳定性,以及CIE与激发波长的映射关系。改变激发波长可以让NGPW∶2% Tm³⁺,xDy³⁺(x=1%、2%、3%、4%、5%)荧光粉的颜色从蓝色-冷白色-暖白色-黄色连续变化。在356nm和363nm激发下,可实现白光发射。对共掺杂荧光粉的荧光衰减曲线进行表征,验证了该荧光粉中Dy³⁺和Tm³⁺之间存在能量转移。详细研究了能量传递效率和能量传递机理。NGPW∶2% Tm³⁺,xDy³⁺荧光粉有望成为极具潜力的色彩可调的单组分荧光粉。

Abstract

A series of Dy³⁺/Tm³⁺ co-doped sodium-gadolinium-phosphate tungstic (NGPW) fluorescent materials were synthesized by a high-temperature solid phase method of secondary melting.Their photoluminescence properties and thermal stability as well as the mapping relationship between the CIE and the excitation wavelength were investigated.Adjusting the excitation wavelength could change the color of NGPW∶2% Tm³⁺,xDy³⁺(x=1%,2%,3%,4%,5%) continuously from blue-cold white-warm white-yellow.White light emission was achieved at 356nm and 363nm excitation.Characterization of the fluorescence decay curves of the co-doped phosphors validated the energy transfer between Dy³⁺ and Tm³⁺ in this phosphor.The energy transfer efficiency and the energy transfer mechanism were studied in detail.In summary,NGPW∶2% Tm³⁺,xDy³⁺ phosphor was expected to become highly potential color adjustable single component phosphor.

关键词

荧光粉 / Dy³⁺掺杂 / Tm³⁺掺杂 / 能量转移

Key words

phosphors / Dy³⁺ doped / Tm³⁺ doped / energy transfer

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Dy³⁺/Tm³⁺掺杂Na₂Gd(PO₄)(WO₄)的制备及发光性能研究[J]. 化工新型材料, 2023, 51(2): 239-244 DOI:10.19817/j.cnki.issn1006-3536.2023.02.048

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