取向性二氧化硅纤维的制备及其发光性能研究  

Preparation of Aligned Silica Fibers and the Optical Properties

作　　者：杜红莉[1] 曹传宝[2] 籍凤秋[3] 

机构地区：[1]石家庄经济学院材料研究所,石家庄050031 [2]北京理工大学材料科学研究中心,北京100081 [3]石家庄铁道学院材料科学与工程分院,石家庄050043

出　　处：《人工晶体学报》2008年第3期679-683,共5页Journal of Synthetic Crystals

基　　金：国家自然科学基金(No.20471007);石家庄经济学院校内科研计划项目(XN200704)

摘　　要：通过气相输运沉积的途径成功制备了大量定向排列的SiO2纤维。对比实验发现,取向性氧化硅纤维的生长与载气的气流量、原料的球磨处理有关。并利用XRD、SEM等方法分析表征样品,结构表明取向性纤维为无定形结构,平均直径为700nm。在波长为260nm的Xe灯激发下,产物的室温光致发光谱在450nm和415nm处分别出现两个蓝光发光峰,其将在微纳米光电器件中发挥作用。Highly aligned silica fibers had been synthesized by a chemical vapor deposition technique.It was found that the growth of the aligned silica fibers might be related to the flow of the carrier gas and the ball-milled process of raw materials by comparative experiments.Aligned SiO2 fibers were characterized by XRD and SEM.The results revealed the as-synthesized fibers are amorphous states and the average diameter of the fibers was 700nm.PL spectrum of the as-synthesized aligned silica fibers showed two blue light peaks at 450 nm and 415 nm respectively,suggesting their potential applications in light and electron emission devices.

关 键 词：取向性SiO2纤维 气相输运沉积 发光性能 

分 类 号：O751[理学—晶体学]