Controllable synthesis,characterization,and growth mechanism of hollow Zn_x Cd_(1-x) S spheres generated by a one-step thermal evaporation method

作     者：杨再兴 钟伟 區澤棠 都有为 

作者机构：Nanjing National Laboratory of Microstructures and Department of PhysicsNanjing University Department of Physics and Materials ScienceCity University of Hong Kong Chemistry DepartmentHong Kong Baptist University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2013年第22卷第10期

页      面：571-574页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0704[理学-天文学] 070301[理学-无机化学] 

基　　金：Project supported by the National Natural Science Foundation of China (Grant No.11174132) the National Key Project for Basic Research of China (Grant Nos.2011CB922102 and 2012CB932304) the Science Fund from the National Laboratory of Solid State Microstructures,Nanjing University,China (Grant No.2010ZZ18) 

主　　题：ZnxCd1-xS hollow spheres semiconductors vapour deposition growth mechanism 

摘      要：Novel hollow ZnxCdl xS spheres that are uniform in size are synthesized through the one-step thermal evaporation of a mixture of Zn and CdS powder. From an X-ray diffraction （XRD） study, the hexagonal wurtzite phase of ZnxCdl_xS is verified, and the Zn mole fraction （x） is determined to be 0.09. According to the experimental results, we propose a mechanism for the growth of Zn0.09Cd0.91S hollow spheres. The results of the cathodoluminescence investigation indicate uniform Zn, Cd, and S distribution of alloyed Zn0.09Cd0.91S, instead of separate CdS, ZnS, or nanocrystals of a core- shell structure. To the best of our knowledge, the fabrication of ZnxCd1-xS hollow spheres of this kind by one-step thermal evaporation has never been reported. This work would present a new method of growing and applying hollow spheres on Si substrates, and the discovery of the Zn0.09Cd0.91S hollow spheres would make the investigation of ZnxCd1-xS micro/nanostructures more interesting and intriguing.