热蒸发法制备ZnSe纳米球及其球形度  

Impact of Se-Doping on Grain Size and Sphericity of Vacuum Evaporated ZnSe-Nanospheres

作　　者：刘力嘉[1] 刘连栋[2] 夏蕾 张丛丛 张晓凯[1] Liu Lijia;Liu LiANDong;Xia Lei;Zhang Congcong;Zhang Xiaokai(School of Physics and Electronics,Shandong Normal University,Jinan 250014,China;Department of Chemistry,Shandong Normal University,Jinan 250014,China)

机构地区：[1]山东师范大学物理与电子科学学院,济南250014 [2]山东师范大学化学化工与材料科学学院,济南250014

出　　处：《真空科学与技术学报》2020年第6期586-590,共5页Chinese Journal of Vacuum Science and Technology

基　　金：国家自然科学基金资助项目(51173069);山东师范大学大型仪器设备开放基金项目(KFJJ2017008)。

摘　　要：使用硒化锌粉末,在一定条件下,采用热蒸发法制备出纳米结构的ZnSe纳米球,分析了添加少量硒粉对纳米球球径及球形度的影响,利用透射电镜及能谱仪观察了ZnSe纳米球的球径大小与分布,同时进行了元素分析,利用X射线衍射分析对ZnSe纳米球进行了物相鉴定。实验结果表明:控制蒸发电流在30 A,蒸发时间为3 s时,可以得到较好的ZnSe纳米球,而添加0.005 g硒粉时,得到的纳米球更小,球形度更好,表明在真空状态下,采用热蒸发法是一种制备ZnSe纳米球结构的有效新方法。The ZnSe nano-spheres,an advanced photo-electronic material,were synthesized by vacuum evaporation of a mixture of ZnSe and Se powder.The influence of the Se-doping on the size distribution and sphericity of ZnSe-nanospheres was investigated with X-ray diffraction,energy dispersive spectroscopy and transmission electron microscopy.The preliminary results show that the Se-doping significantly affected the size and sphericity of ZnSe nanospheres.To be specific,the vacuum evaporation,with or without Se-doping,was capable of producing highly pure ZeSe-nanospheres;and the Se-doping,at a Se-content of 0.005 g,obviously decreased the diameter and greatly improved the sphericity of ZnSe-nanospheres,because the densities of both quasi-spherical and irregular-shaped ZnSe-nanoclusters were considerably reduced.Possible mechanisms responsible for the better sphericity and smaller diameter of ZnSe-nanospheres were tentatively discussed in a thought provoking way.

关 键 词：硒化锌 纳米球 电镜观察 球形度 

分 类 号：O613.52[理学—无机化学]