可调谐Y2MgTiO6:Tm3+,Dy3+荧光粉的发光特性和能量转移机理

doi:10.11896/cldb.23120260

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Abstract 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.

Key words： Y₂MgTiO₆ photoluminescence energy transfer X-ray excitation luminescence color tunable

Published: 25 April 2025 Online: 2025-04-18

CLC number:	O433
	O434
	TQ422

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	Articles by authors
	WANG Luyan
	XIONG Zhengye
	ZHONG Guotao
	HUANG Jinzhe
	LIU Hao
	GUO Jingyuan

Cite this article:

WANG Luyan,XIONG Zhengye,ZHONG Guotao, et al. Luminescence Properties and Energy Transfer Mechanism of Tunable Y₂MgTiO₆:Tm³⁺, Dy³⁺ Phosphors[J]. Materials Reports, 2025, 39(8): 23120260-8.

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https://www.mater-rep.com/EN/10.11896/cldb.23120260 OR https://www.mater-rep.com/EN/Y2025/V39/I8/23120260

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