化工新型材料

化工新型材料 ›› 2025, Vol. 53 ›› Issue (6) : 166-172. DOI: 10.19817/j.cnki.issn1006-3536.2025.06.039

科学研究

PEG辅助沉淀法制备YPO₄∶Er³⁺,Yb³⁺上转换发光粉和发光性质

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Preparation and luminescence properties of YPO₄∶Er³⁺,Yb³⁺ up-conversion phosphors by PEG-assisted coprecipitation method

Xu Zhenting, Zhang Yanghui, Han Kunbo, Li Yanhong

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Received		Published
2024-05-28		2025-06-20
Issue Date	Revised Date
2025-06-17	2024-05-28

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摘要

采用共沉淀法,以聚乙二醇(PEG)为分散剂制备了前驱体,后经800℃热处理获得了系列YPO₄∶Er³⁺,Yb³⁺上转换发光粉。X射线衍射(XRD)结果表明:所有的样品均为四方结构的YPO₄相。PEG对样品的晶粒尺寸有影响。扫描电镜(SEM)结果表明:PEG的加入提高了颗粒的分散性和均匀性。红外光谱分析结果表明:PEG的添加对发光粉结构没有明显的影响。980nm红外光激发下,YPO₄∶Er³⁺,Yb³⁺发光粉的上转换发射光谱显示出来自Er³⁺离子绿光和红光的特征发射。各样品的发光强度和红光/绿光相对强度比与晶粒尺寸、晶粒表面形貌有关。讨论了可能的上转换发光过程,并计算了样品的色坐标。

Abstract

A series of YPO₄∶Er³⁺,Yb³⁺ up-conversion phosphors were prepared via coprecipitation method using polyethylene glycol (PEG) as dispersant to prepare precursors,and then heat-treated.The results of XRD indicated that all of the samples were tetragonal YPO₄ phase.PEG had an effect on the grain size of the samples.The results of SEM showed that the addition of PEG improved the dispersion and uniformity of the particles.The infrared spectra analysis revealed that PEG addition had no obvious effect on the structure of phosphors.The up-conversion emission spectra of YPO₄∶Er³⁺,Yb³⁺ phosphors under 980nm infrared excitation exhibited characteristic green and red emission from Er³⁺ ions.The intensity and the intensity ratios of red to green emission of the samples were related to grain size and grain surface morphology.The possible up-conversion luminescence processes were discussed,and the color coordinates of the samples were calculated.

关键词

YPO₄ / 上转换发光 / 共沉淀法 / 聚乙二醇

Key words

YPO₄ / up-conversion luminescence / coprecipitation method / polyethylene glycol

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PEG辅助沉淀法制备YPO₄∶Er³⁺,Yb³⁺上转换发光粉和发光性质[J]. 化工新型材料, 2025, 53(6): 166-172 DOI:10.19817/j.cnki.issn1006-3536.2025.06.039

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