无机盐溶胶-凝胶工艺制备长余辉发光粉体的研究  

Inorganic Sol-Gel Process of Preparing Long Afterglow Luminescent Powders

作　　者：熊煜虹[1] 王东[1] 陆毅青[1] 李永祥[1] 殷庆瑞[1] 

机构地区：[1]中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室,上海200050

出　　处：《无机材料学报》2003年第2期451-456,共6页Journal of Inorganic Materials

基　　金：国家自然科学基金(20151003)

摘　　要：以无机盐为原料,成功地制备了均一、稳定、透明的SrAl2O4溶胶.系统地研究了无机盐溶胶一凝胶工艺制备SrAl2O4:Eu2+,Dy3+长余辉发光粉体的工艺条件及其影响因素,并通过透射电镜和荧光光谱分析对粉体的微结构、表面形态及发光性能进行了表征.实验结果表明,在适宜的工艺条件下,可制备颗粒均匀的针状纳米发光粉体,其发光特性与传统的高温固相烧结法相似,但烧结温度可降低300℃左右.The stable transparent sol of SrAl2O4 was successfully prepared by using cheap inorganic materials as precursors. The uniform needle-like nano-powders were synthesized at low temperature and reduce atmosphere. The conditions and factors of preparing the long afterglow powders of SrAl2O4:Eu2+,Dy3+ by sol-gel process were reported systematically. The microstructures and surface shapes of samples were observed by the transmission electron microscope (TEM). The crystallization processes were determined by the X-ray diffractometer (XRD). The luminescent properties were studied by the fluorescence spectrophotometer. The experimental results show that the luminescent features of samples synthesized by the sol-gel process under the proper conditions are similar to those by solid-state reaction process, but the sintering temperature is reduced about 300degreesC.

关 键 词：无机盐 溶胶-凝胶工艺 碱土铝酸盐 发光粉体 

分 类 号：O614[理学—无机化学] TF12[理学—化学]