发光学报2012，Vol.33Issue(8)：851-856,6.DOI:10.3788/fgxb20123308.0851
BaWO4:Eu3+ 红色荧光粉的水热制备及其发光性能
Hydrothermal Preparation of BaWO4∶Eu3+ Red Phosphor and Its Luminescent Properties
摘要
Abstract
The red phosphor powders BaWO4: 16% Eu3 + were successfully prepared by hydrothermal method in different hydrothermal time. The crystal structure and surface morphology of the phosphor as-prepared was characterized by XRD patterns and SEM, respectively. The correlation between the crystal orientation of the matrix and the characteristic emission of the doped rare earth ions Eu were discussed. The pure phase structure BaWO4: 16% Eu + phosphor was obtained under the hydrothermal reaction at 160 ℃. The room temperature characteristic emission 5D0 → 7F0 and 5D0→7FJ(7 = 1 , 2) of Eu3+ ions in the samples as-prepared were observed under the excitation of 395 nm or 464 nm light. 5D0→F2 transition emission intensity was significantly higher than those of 5D0→F, and 5D0→7F0. XRD analysis indicates that the samples prepared at a hydrothermal temperature of 160 °C are all tetragonal. The growth rates of each crystal face vary with different hydro-thermal time. This difference leads to a change of crystal symmetry and the luminescent properties of BaWO4: Eu3+ samples. The optimized hydrothermal time is 10 h for the Eu3+ doping concentration of 16%.关键词
水热法/BaWO4∶Eu3+/纳米荧光粉体/发光Key words
hydrothermal method/ BaWO4: Eu3+ / nano-phosphor/ luminescene分类
数理科学引用本文复制引用
杨晓旭,吕树臣,曲秀荣,孟庆裕,张丽丽,桑士晶..BaWO4:Eu3+ 红色荧光粉的水热制备及其发光性能[J].发光学报,2012,33(8):851-856,6.基金项目
黑龙江省教育厅科学技术研究重点项目(12511z013) （12511z013）
国家自然科学基金(51002041)资助项目 （51002041）
