Structural and optical properties of ZNO nanowires synthesized from ball-milled ZNO powders

Kwangsue Park, Jong Soo Lee, Man Young Sung, Sangsig Kim

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Abstract

ZnO nanowires were synthesized at 1380°C from ball-milled ZnO powders by a thermal evaporation procedure with argon carrier gas without any catalysts. Scanning electron microscopy revealed that the typical diameter and length of the ZnO nanowires are in the uniform ranges of 15 to 40 nm and 10 to 70 μm, respectively. Transmission electron microscopy results revealed that the ZnO nanowires are single crystalline with the growth direction perpendicular to the (110) lattice planes. In photoluminescence spectra taken at 8 and 300 K, the peak energies of near band-edge (NBE) emission peaks for the ZnO nanowires are lower by about 40 meV than for ZnO bulk, and the NBE emission from the nanowires is much broader than that for the bulk.

Original languageEnglish
Pages (from-to)7317-7321
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume41
Issue number12
Publication statusPublished - 2002 Dec 1

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Keywords

  • Ball-milling
  • Nanowires
  • Near band-edge (NBE)
  • Photoluminescence
  • ZnO

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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