Luminescence Properties and Energy Transfer Mechanism of Tunable Y2MgTiO6:Tm3+, Dy3+ Phosphors

被引：0

作者：

Wang, Luyan ^{[1
]}

Xiong, Zhengye ^{[1
]}

Zhong, Guotao ^{[2
]}

Huang, Jinzhe ^{[2
]}

Liu, Hao ^{[1
]}

Guo, Jingyuan ^{[1
]}

机构：

[1] School of Electronic and Information Engineering, Guangdong Ocean University, Guangdong, Zhanjiang

[2] College of Ocean Engineering and Energy, Guangdong Ocean University, Guangdong, Zhanjiang

来源：

Cailiao Daobao/Materials Reports | 2025年 / 39卷 / 08期

关键词：

color tunable; energy transfer; photoluminescence; X-ray excitation luminescence; Y2MgTiO6;

D O I：

10.11896/cldb.23120260

中图分类号：

学科分类号：

摘要：

A series of Y2MgTiO6:Tm3+, Dy3+ (YMT:Tm3+, Dy3+) double perovskite phosphors with excellent luminescent properties were prepared by high temperature solid-state reaction method. The phase structure, composition and luminescence properties of the prepared products were studied by X-ray powder diffraction(XRD), photoluminescence spectrum, fluorescence lifetime spectrum and X-ray excitation spectrum, and the influence of Dy3+ doping amount on luminescent properties was analyzed. By comparing the photoluminescence spectrum and fluorescence lifetime of YMT:0.05Tm3+yDy3+(y=0, 0.01, 0.05,0.1), it is found that there is an effective energy transfer from Tm3+to Dy3+, and the energy transfer mechanism is dipole-dipole interaction. Under the excitation of ultraviolet light, the luminescence of YMT:0.05Tm3+yDy3+ phosphor is blue-white-yellow broadband adjustable color, the CIE coordinate of white light is (0.331 6, 0.326 1), the color temperature is 5 538 K, the quantum efficiency(43.72%) is high, and the stability is good. The intensity of the phosphor under X-ray excitation is higher than that under ultraviolet excitation, and it has high radiation resistance and good thermal stability for X-ray. The research results show that YMT:Tm3+, Dy3+can achieve broadband tunable white light emission, which is a potential X-ray or ultraviolet light excited white light emitting fluorescent material. © 2025 Cailiao Daobaoshe/ Materials Review. All rights reserved.

引用

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