摘要
以氯化钙、四氯化钛和Pr6O11为原料,采用水热法结合煅烧制备了掺镨的钛酸钙长余辉发光材料。水热产物进行了XRD、扫描电镜、荧光光谱等表征。研究了水热条件、煅烧条件以及添加Al3+(以Al(NO3)3为原料)对CaTiO3:Pr粉末发光的影响。结果表明:直接水热即可得到具有一定余辉的CaTiO3:Pr发光材料,添加Al3+后长余辉性能显著提高。在200℃水热反应6h可获得性能最佳的产物,最佳煅烧条件为900℃煅烧1h。
Long-lasting CaTiO3 ：Pr phosphor was prepared with hydrothermal method. The samples were characterized with powder X-ray diffraction, scanning electron microscopy, and fluorescence spectrophotometer. It was found that CaTiO3 ：Pr with apparent afterglows could be got from simply hydrothermal reaction without any sintering. The optimum conditions for hydrothermal reaction were 200℃/6h, and 900℃/1h for sintering reaction. It was also found that the afterglow properties could be greatly enhanced by addition of Al^3＋ to the CaTiO3 ：Pr system.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2009年第3期349-352,共4页
Journal of the Chinese Society of Rare Earths
基金
国家自然科学基金项目(30670523)
广东省自然科学基金团队项目(05200555)资助
