水热法合成CdS/ZnO核壳结构纳米微粒  

Synthesis of Core/Shell Structural CdS/ZnO Nanoparticles by Hydrothermal Method

作　　者：孙聆东[1] 付雪峰[1] 钱程[1] 廖春生[1] 严纯华[1] 

机构地区：[1]北京大学稀土材料化学及应用国家重点实验室

出　　处：《高等学校化学学报》2001年第6期879-882,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金! (批准号 :2 970 10 0 1;2 983 2 0 10 ;2 0 0 0 10 0 2 );国家重点基础研究发展规划项目! ( G19980 613 13 );国家

摘　　要：以半胱氨酸镉配合物为前驱体 ,采用水热法合成 Cd S纳米微粒 ,并以 Zn O对其进行表面修饰 ,形成具有核 /壳结构的 Cd S/Zn O半导体纳米微粒 . Cd S纳米微粒表面经 Zn O修饰后 ,其带边发射大大增强 .透射电镜显示 ,1 1 0℃下反应 4 h所得的 Cd S/Zn O颗粒尺寸约为 2 0 nm。CdS and ZnO capped CdS semiconductor nanoparticles were synthesized via hydrothermal method by thermal decomposition of the cysteine cadmium complex precursor. The results of XPS suggested that CdS and ZnO was formed. Compared to CdS nanoparticles, the band gap emission of CdS/ZnO was greatly improved, which means the shell of ZnO modified the surface of CdS core and reduced the surface defect. ED confirmed the formation of hexagon phase CdS and the TEM image indicated that the size of CdS/ZnO was about 20 nm.

关 键 词：不热水 发射光谱 硫化镉 氧化锌 核/壳结构 表面修饰 半导体纳米微粒 复合半导体 

分 类 号：TN304.2[电子电信—物理电子学] TB383[一般工业技术—材料科学与工程]