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Synthesis of free-standing ZnO/Zn core-shell micro-polyhedrons using thermal chemical vapor deposition

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2008, 18(4), pp.155~159
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

KIM, SANGWOO 1,  최민열 2,  박현규 2,  SoonWook Jeong 2

1성균관대학교
2금오공과대학교

Accredited

ABSTRACT

In this work, we report synthesis of free-standing ZnO/Zn core-shell micro-polyhedrons using metal Zn pellets as a source material by the thermal chemical vapor deposition process. Scanning and transmission electron microscopy measurements were introduced to investigate morphologies and structural properties of as-grown ZnO/Zn core-shell micropolyhedrons. It was found that micro-polyhedrons were composed of inner single-crystalline metal Zn surrounded by singlecrystalline ZnO nanorod arrays. The inner single crystalline metal Zn with micro-scale diameter has a hexagonal crystal structure. Diameter and height of ZnO nanorods covering the metal Zn surface are below 10 nm and 100 nm, respectively. It was also confirmed that c-axis oriented ZnO nanorods are single crystalline with a hexagonal crystal structure.

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