【作者】 翟永清； 杨国忠； 周雪玲； 刘红梅；

【Author】 ZHAI Yong-qing YANG Guo-zhong ZHOU Xue-ling LIU Hong-mei (College of Chemistry and Environmental Science,Hebei University,Baoding 071002,China)

【机构】 河北大学化学与环境科学学院；

【摘要】 采用燃烧法合成了 Sr₂CeO₄荧光粉,并利用 XRD、FL 等技术系统地研究了该荧光粉合成过程中原料配比、添加物乙二醇、H₂O₂、焙烧时间等工艺条件对物相结构、发光性能的影响。研究表明在1100℃焙烧条件下,随着甘氨酸与硝酸根的摩尔比由0．5：1减少为0．1：1,发光强度先升高后降低；添加适量的乙二醇能有效地提高发光强度；H₂O₂能有效抑制燃烧的剧烈程度,提高产率；随着焙烧时间由1h 延长至3h,发光强度也呈现先升高,后降低的变化趋势,说明适当的延长焙烧时间有利于材料结晶完整。更多还原

【Abstract】 Sr₂CeO₄ phosphor was synthesized successfully by combustion process.The influences of technological parameters on the structures and luminescent property of the phosphor,such as the ratio of materials,addition of glycol and H₂O₂,calcination time and so on,were investigated by XRD,Fluorescence spectrophotometer.The results show that under the calcination temperature of 1100℃,the intensity of luminescence increases firstly and then decreases along with the mole ratio of Glycine to NO₃ from 0.5:1 to 0.1:1.Furthermore,the addition of proper amount of ethylene glycol can improve the luminescent intensity of the target effectively,while the addition of H₂O₂ can make the combustion mildly and obtain high yield.With the variation of calcination time from 1h to 3h at 1100℃,the intensity of luminescence also increase firstly and then decreases,which indicates that prolonging calcination time properly is beneficial to obtain perfect crystal of the target.更多还原