掺杂效应对氧化锡纳米晶微结构与性能的影响  

Study on the Effects of Rh Doping on Microstructure and Properties of Tin Dioxide Nanocrystallines

作　　者：胡春霞[1] 吴佑实[1] 魏慧英[1] 

机构地区：[1]山东大学材料科学与工程学院,济南250061

出　　处：《材料工程》2004年第7期23-26,31,共5页Journal of Materials Engineering

摘　　要：采用配合物前驱体化学法制备了颗粒分布均匀 ,性质稳定的 Sn O2 纳米微粒。通过 XRD,HRTEM分析表明该方法制备的 Rh掺杂 Sn O2 纳米晶具有明显的包覆结构 ,粒径较未掺杂体系纳米晶的粒径小。通过对两纳米晶体系的紫外图谱研究 ,发现 Rh掺杂后 Sn O2 纳米晶的激子峰和吸收带边均发生红移现象 。Beginning with SnCl2 equable dispersed and stable SnO2 and Rh-doping SnO2 nanocrystallines were synthesized by the compound-precursor chemical method. The XRD and HRTEM analyses show that prepared Rh doping SnO2 nanocrystallines have smaller particle radius than the undoping ones. Besides, there are enwrapped structures around the Rh doping SnO2 particles. According to discussions on the UV-Vis curves of SnO2 and Rh-doping SnO2 nanocrystallines, it is clear that the excitonic absorption and the band-gap edge absorption all move toward smaller wavelength, namely red shift.

关 键 词：SNO2纳米晶 掺杂 包覆结构 红移 

分 类 号：TB383[一般工业技术—材料科学与工程]