摘要
以硝酸铝和尿素为原料，聚乙二醇2000为表面活性剂，氟化铝为添加剂，水热-热解法得到规则片状氧化铝粉体，以该氧化铝为原料合成YAG：Ce^3＋黄色荧光粉。通过XRD、SEM、FM等对产物进行表征。结果表明，120℃水热反应24h，加入适量氟化铝高温煅烧可以获得粒径3～4μm，厚度0．2～0．3μm的规则六边形片状氧化铝。氟化铝添加剂对氧化铝的形貌粒径控制起到重要作用，自制片状α-Al2O3粉体适合作为白光LED用铝酸盐荧光粉基质。
Light emitting diode（LED） has been widely applied in the field of lighting and displaying. Flaky alumina powders was synthesized using aluminum nitrate and urea as the raw materials, PEG 2000 as the surfactant and aluminum fluoride as the additive. The YAG ： Ce^3＋ phosphor was synthesized with flaky alumina by the method of hydrothermal-pyrolysis. The structure and morphologies of the synthesized samples were investigated by XRD, SEM and FM techniques. The results showed that after 24 hours＇ thermal reaction at 120℃, by adding appropriate amount of aluminum fluoride, regular hexagon tabular alumina with particle size of 3-4μm and thickness of 0.2-0.3μm can be obtained through high-temperature calcination. The additive aluminum fluoride plays an important role in controlling the particle size of the alumina. This study explores the application of the flaky alumina powders, which was synthesized by the method of hydrothermal-pyrolysis and served as the base LED phosphor powder, in the phosphor powder YAG ： Ce^3＋ and obtains optimized results.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2013年第18期2663-2667,共5页
Journal of Functional Materials
基金
国家自然科学基金资助项目(21205092)
国家高技术研究发展计划(863计划)资助项目(2011AA05A202)
陕西省教育厅专项资助课题资助项目(2013JK0704)
关键词
水热热解
控制合成
片状氧化铝
LED灯粉
hydrothermal-pyrolysis
controlled synthesis
flaky alumina
LED phosphor powder
