Effect of Introduction of Lu on Thermal Stability and Luminescence Properties of YAG:Ce3+,Sm3+ Using Orthogonal Experiments

IF 1.5 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS

Transactions of the Indian Ceramic Society Pub Date : 2021-01-02 DOI:10.1080/0371750X.2020.1857308

Guozhen Li, Liping Lu, Haiying Sun

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引用次数: 0

Abstract

ABSTRACT Y(Lu)AG:Ce3+,Sm3+ yellow phosphors were prepared by molten salt method with 0.1NaCl-0.1KCl-0.8NaF as the molten salt. The effects of multi-factor variables on the properties of Y(Lu)AG:Ce3+,Sm3+ phosphors were comprehensively studied by orthogonal experiments which is a method to study the experiment with multi-factor variables and select some representative ones from the comprehensive experiment to find the optimal experimental conditions. The optimum synthesis conditions were as follows: Ce3+ concentration 0.06 mol%, Lu3+ concentration 0.5 mol%, Sm3+ concentration 0.02 mol%, calcination temperature 1300oC, insulation time 1.5 h. The effects of introduction of Lu3+ on the crystal structure, temperature stability and luminescence properties of YAG:Ce3+,Sm3+ were studied. The results showed that due to the introduction of Lu3+ ions, the matrix lattice slightly changed (belonging to the cubic crystal system), the emission peak was blue shifted, temperature stability improved and decay reduced, which plays an important role in improving the lifetime of white LEDs. GRAPHICAL ABSTRACT

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引入Lu对YAG:Ce3+，Sm3+材料热稳定性和发光性能的影响

摘要以0.1NaCl-0.1KCl-0.8NaF为熔盐，采用熔盐法制备了Y（Lu）AG:Ce3+，Sm3+黄色荧光粉。采用正交实验的方法，综合研究了多因素变量对Y（Lu）AG:Ce3+，Sm3+荧光粉性能的影响。正交实验是用多因素变量进行实验研究的一种方法，并从综合实验中选择一些有代表性的变量来寻找最佳实验条件。最佳合成条件为：Ce3+浓度0.06mol%，Lu3+浓度0.5mol%，Sm3+浓度0.02mol%，煅烧温度1300oC，保温时间1.5h。研究了Lu3+的引入对YAG:Ce3+，Sm3+晶体结构、温度稳定性和发光性能的影响。结果表明，由于Lu3+离子的引入，基体晶格略有变化（属于立方晶系），发射峰发生蓝移，温度稳定性提高，衰变减少，这对提高白光LED的寿命起到了重要作用。图形摘要

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来源期刊

Transactions of the Indian Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

2.40

自引率

8.30%

发文量

审稿时长

2.3 months

期刊介绍： Transactions of the Indian Ceramic Society is a quarterly Journal devoted to current scientific research, technology and industry-related news on glass and ceramics. The Journal covers subjects such as the chemical, mechanical, optical, electronic and spectroscopic properties of glass and ceramics, and characterization of materials belonging to this family. The Editor invites original research papers, topical reviews, opinions and achievements, as well as industry profiles for publication. The contributions should be accompanied by abstracts, keywords and other details, as outlined in the Instructions for Authors section. News, views and other comments on activities of specific industries and organizations, and also analyses of industrial scenarios are also welcome.