Morphological transition of ZnO nanostructures influenced by magnesium doping

T. Premkumar, Y. S. Zhou, Y. Gao, K. Baskar, L. Jiang, Y. F. Lu

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Wurtzite zinc oxide (ZnO) nanochains have been synthesized through high-pressure pulsed laser deposition. The chain-like ZnO nanostructures were obtained from magnesium (Mg) doped ZnO targets, whereas vertically aligned nanorods were obtained from primitive ZnO targets. The Mg doping has influenced the morphological transition of ZnO nanostructures from nanorods to nanochains. The field emission scanning electron microscope images revealed the growth of beaded ZnO nanochains. The ZnO nanochains of different diameters 40 and 120 nm were obtained. The corresponding micro-Raman spectra showed strong E 2H mode of ZnO, which confirmed the good crystallinity of the nanochains. In addition to near band edge emission at 3.28 eV, ZnO nanochains show broad deep level emission at 2.42 eV than that of ZnO nanorods.

Original languageEnglish (US)
Pages (from-to)2297-2300
Number of pages4
JournalApplied Surface Science
Volume258
Issue number7
DOIs
StatePublished - Jan 15 2012

Keywords

  • FESEM
  • HPPLD
  • Micro-Raman spectroscopy
  • ZnO nanochains
  • ZnO nanorods

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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