共沉淀法制备纳米级YAG:Ce^(3+)荧光粉的分散性与均一性研究进展  

Research Progress on Dispersibility and Homogeneity of Nanoscale YAG:Ce^(3+)Phosphors Prepared by Co-precipitation Method

作　　者：刘英男 田俊行 谢吉焕 吴劲频 孙学义[1] 庄卫东[1] Liu Yingnan;Tian Junhang;Xie Jihuan;Wu Jinpin;Sun Xueyi;Zhuang Weidong(State Key Laboratory of Advanced Metallurgy,School of Metallurgical and Ecological Engineering,Beijing Key Laboratory of Green Recovery and Extraction of Rare and Precious Metals,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学绿色低碳钢铁冶金全国重点实验室,冶金与生态工程学院,稀贵金属绿色回收与提取北京市重点实验室,北京100083

出　　处：《中国稀土学报》2025年第2期235-255,共21页Journal of the Chinese Society of Rare Earths

基　　金：国家重点研发计划项目(2022YFB3503800);中央高校基本科研业务费专项(USTB06500177)资助。

摘　　要：石榴石基YAG:Ce^(3+)荧光粉具有制备成本低、发射光谱宽、激发光谱与蓝光芯片契合度高等优点,已在显示、照明等领域获得广泛应用。纳米级YAG:Ce^(3+)荧光粉凭借尺寸小、光损失低、器件封装稳定性强等特点,在mini-LED,micro-LED等前沿领域表现出突出的应用潜力。性能优良的纳米级YAG:Ce^(3+)荧光粉依赖于良好的颗粒分散性以及尺寸、组分均一性。本文基于对纳米级YAG:Ce^(3+)荧光粉的分散性与均一性的成因分析,根据共沉淀制备方法中前体制备、后处理以及焙烧的三大过程,系统阐述原料加入量、滴定方式、分散剂、陈化过程和焙烧条件等工艺条件对材料结构、形貌及性能的影响及其作用机理。基于上述多因素协同作用,对共沉淀法制备均一性、分散性及发光性能优良的纳米级YAG:Ce^(3+)荧光粉提供指导。The YAG:Ce^(3+)phosphor with garnet structure has the advantages of low preparation cost,wide emission spectra,high compatibility with blue chip,which has been widely used in fields such as display and lighting.Nanoscale YAG:Ce^(3+)phosphor shows outstanding application potential in advanced fields such as mini-LED and micro-LED due to their small size,low light loss and strong packaging stability,etc.The excellent performance of nanoscale YAG:Ce^(3+)phosphor depends on good particle dispersion and homogeneity of size and composition.Through the analysis of the dispersibility and homogeneity of nanoscale YAG:Ce^(3+)phosphor,the three major processes of pre-preparation,post-treatment and calcining in the co-precipitation preparation method are discussed in this paper.The effects of raw material addition amount,titration method,dispersant,aging process and calcining conditions on the structure,morphology and properties of the materials and their mechanisms are systematically described.Based on the synergistic effect of various factors,this paper provides the guidance for the preparation of nanoscale YAG:Ce^(3+) phosphor with excellent homogeneity,dispersibility,and luminescent properties by co-precipitation method.

关 键 词：YAG:Ce^(3+) 纳米级荧光粉 共沉淀 分散性 均一性 

分 类 号：O482.3[理学—固体物理]