共沉淀法制备CaTiO_3∶Eu~(3+)荧光粉及其发光性能的研究

• 作 者: 李帅帅 刘会娇 彭华庆 林宏斌 顾金楼 李蔚
• 机 构: 华东理工大学材料科学与工程学院,淄博金鼎制釉有限公司,
• 出 处: 中国陶瓷
• 发表日期: 2016年10期
• 关键词: 荧光粉 CaTiO_3 Eu 化学共沉淀 CaTiO3∶Eu3+ 无水氯化钙 共沉淀法合成 发光强度 电荷补偿 前驱

以(NH_4)_2C_2O_4·H_2O为沉淀剂,以钛酸四丁酯和无水氯化钙分别作为钛源和钙源,采用化学共沉淀法合成了CaTiO_3∶Eu~(3+)荧光粉前驱体,并探索了煅烧温度及Eu~(3+)掺入量对产物晶相和发光强度的影响。研究表明,最优化的煅烧温度、Eu~(3+)离子的摩尔浓度分别为1300℃和9 mol%。还研究了电荷补偿剂Li~+、Al~(3+)对荧光强度的影响,且分析了可能的作用机理。

The precursor of CaTiO_3:Eu ~ (3+) phosphor was synthesized by chemical coprecipitation method using (NH_4) _2C_2O_4 · H_2O as precipitating agent, tetrabutyl titanate and anhydrous calcium chloride as titanium source and calcium source respectively The effects of calcination temperature and Eu 3+ concentration on the crystal phase and luminescence intensity of the product were also investigated. The results show that the optimal calcination temperature is about 1300 ℃ and 9 mol% Eu (3+) ions respectively. The effects of charge compensators Li ~ + and Al ~ (3+) on the fluorescence intensity were also studied, and the possible mechanism of action was also analyzed.