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Formation of ZnO nanostructures by a simple way of thermal evaporation

Authors Yao, BD HKUST affiliated (currently or previously)
Chan, YF HKUST affiliated (currently or previously)
Wang, N. View this author's profile
Issue Date 2002
Source Applied physics letters , v. 81, (4), 2002, JUL 22, p. 757-759
Summary Mass production of ZnO nanowires, nanoribbons, and needle-like rods has been achieved by a simple method of thermal evaporation of ZnO powders mixed with graphite. Metallic catalysts, carrying gases, and vacuum conditions are not necessary. Temperature is the critical experimental parameter for the formation of different morphologies of ZnO nanostructures. Zn or Zn suboxide plays a crucial role for the nucleation of ZnO nanostructures. The as-prepared ZnO nanowires consist of single crystalline cores and thin amorphous shells. As determined by electron diffraction, the growth direction of ZnO nanowires is [001], which has no orientation relationship with the substrate. A strong room-temperature photoluminescence in ZnO nanostructures has been demonstrated. (C) 2002 American Institute of Physics.
ISSN 0003-6951
Language English
Format Article
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