Assembly of Three-Dimensional Hetero-Epitaxial ZnO/ZnS Core/Shell Nanorod and Single Crystalline Hollow ZnS Nanotube Arrays

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	Assembly of Three-Dimensional Hetero-Epitaxial ZnO/ZnS Core/Shell Nanorod and Single Crystalline Hollow ZnS Nanotube Arrays
	X. Huang; M. Wang; M. G. Willinger; L. D. Shao; D. S. Su; X. M. Meng
	2012
发表期刊	Acs Nano
ISSN	1936-0851
卷号	6 期号:8 页码:7333-7339
摘要	Hetero-epitaxial growth along three-dimensional (3D) interfaces from materials with an intrinsic large lattice mismatch is a key challenge today. In this work we report, for the first time, the controlled synthesis of vertically aligned ZnO/ZnS core/shell nanorod arrays composed of single crystalline wurtzite (WZ) ZnS conformally grown on ZnO rods along 3D interfaces through a simple two-step thermal evaporation method. Structural characterization reveals a "(01-10)(ZnO)//(01-10)(ZnS) and [0001](ZnO)//[0001](ZnS)" epitaxial relationship between the ZnO core and the ZnS shell. It is exciting that arrays of single crystalline hollow ZnS nanotubes are also innovatively obtained by simply etching away the inner ZnO cores. On the basis of systematic structural analysis, a rational growth mechanism for the formation of hetero-epitaxial core/shell nanorods is proposed. Optical properties are also investigated via cathodoluminescence and photoluminescence measurements. Remarkably, the synthesized ZnO/ZnS core/shell heterostructures exhibit a greatly reduced ultraviolet emission and dramatically enhanced green emission compared to the pure ZnO nanorods. The present single-crystalline heterostructure and hollow nanotube arrays are envisaged to be highly promising for applications in novel nanoscale optoelectronic devices, such as UV-A photodetectors, lasers, solar cells, and nanogenerators.
部门归属	[huang, xing; wang, meng; meng, xiang-min] chinese acad sci, tech inst phys & chem, key lab photochem convers & optoelect mat, beijing 100190, peoples r china. [huang, xing; willinger, marc-georg; shao, lidong; su, dang sheng] max planck gesell, fritz haber inst, dept inorgan chem, d-14195 berlin, germany. [su, dang sheng] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [huang, xing; wang, meng] chinese acad sci, grad sch, beijing 100049, peoples r china.;meng, xm (reprint author), chinese acad sci, tech inst phys & chem, key lab photochem convers & optoelect mat, 29 zhongguancun e rd, beijing 100190, peoples r china.;mengxiangmin@mail.ipc.ac.cn
关键词	Heterostructures Single Crystalline Zns/zns Core/shell Hetero-epitaxial Zns Nanotubes Wurtzite Structure Zns/zno Biaxial Nanobelt Nanowire Arrays Photoluminescence Properties Photovoltaic Applications Core-shell Heterostructures Nanostructures Heterojunction Nanoribbons Conversion
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60013
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Huang,M. Wang,M. G. Willinger,et al. Assembly of Three-Dimensional Hetero-Epitaxial ZnO/ZnS Core/Shell Nanorod and Single Crystalline Hollow ZnS Nanotube Arrays[J]. Acs Nano,2012,6(8):7333-7339.
APA	X. Huang,M. Wang,M. G. Willinger,L. D. Shao,D. S. Su,&X. M. Meng.(2012).Assembly of Three-Dimensional Hetero-Epitaxial ZnO/ZnS Core/Shell Nanorod and Single Crystalline Hollow ZnS Nanotube Arrays.Acs Nano,6(8),7333-7339.
MLA	X. Huang,et al."Assembly of Three-Dimensional Hetero-Epitaxial ZnO/ZnS Core/Shell Nanorod and Single Crystalline Hollow ZnS Nanotube Arrays".Acs Nano 6.8(2012):7333-7339.