化工新型材料

化工新型材料 ›› 2022, Vol. 50 ›› Issue (1) : 131-136. DOI: 10.19817/j.cnki.issn1006-3536.2022.01.027

新材料与新技术

包覆CaF₂对稀土铝酸锶长余辉发光材料耐水性能的影响

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Influence of coated CaF₂ on water resistance of SrAl₂O₄:Eu²⁺,Dy³⁺ long-lasting phosphor material

Shi Muyang, Jin Yang, Ge Mingqiao

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Received		Published
2020-10-15		2022-01-20
Issue Date	Revised Date
2022-02-08	2020-10-15

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摘要

为了提高稀土铝酸锶—SrAl₂O₄:Eu²⁺,Dy³⁺(SAOED)的耐水性能,通过液相沉积法制备了不同CaF₂包覆量的SAOED。对包覆前后样品的微观形貌、物相结构、发光性能以及耐水性进行了研究。结果表明:经由CaF₂包覆后的SAOED表面粗糙,有颗粒沉积的现象,包覆工艺及CaF₂包覆层未改变SAOED的物相结构和光谱特性,包覆前后,SAOED的激发和发射光谱的峰型一致,CaF₂包覆未改变SAOED的发光中心;通过余辉测试发现CaF₂包覆量与SAOED的余辉性能呈负相关;CaF₂包覆后的SAOED耐水性显著提升,耐水性能与包覆量呈正相关。包覆量为8%的样品兼备良好的耐水性及发光性能。

Abstract

In order to improve the water resistance of SrAl₂O₄:Eu²⁺,Dy³⁺ (SAOED),SAOED with different CaF₂ coating amount was prepared by liquid deposition method.The microscopic morphology,phase structure,luminescence performance and water resistance of the samples before and after coating were investigated.The results shown that the surface of SAOED coated with CaF₂ was rough,the phenomenon of particle deposition,the coating process and the CaF₂ coating layer did not change the phase structure and spectral characteristics of SAOED.Before and after coating,the excitation and emission spectra of SAOED had the same peak shape,CaF₂ coating did not change the luminescent center of SAOED.Through the afterglow test,it was found that the amount of CaF₂ coating was negatively correlated with the afterglow performance of SAOED.The water resistance of SAOED after CaF₂ coating was significantly improved,and positively correlated with the amount of coating.The sample with 8% coating had good water resistance and luminescence performance.

关键词

稀土铝酸锶 / 氟化钙包覆 / 耐水性能 / 液相沉积法

Key words

SrAl₂O₄:Eu²⁺ / Dy³⁺ / CaF₂ coating / water resistance / liquid deposition method

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包覆CaF₂对稀土铝酸锶长余辉发光材料耐水性能的影响[J]. 化工新型材料, 2022, 50(1): 131-136 DOI:10.19817/j.cnki.issn1006-3536.2022.01.027

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