Structural and optical properties of ultrathin ZnO nanoneedles grown on GaN substrate by hybrid approach

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Abstract

Ultrathin ZnO nanoneedles were grown on GaN substrate by the low temperature aqueous solution method. FESEM results demonstrated that the ZnO nanoneedles stem and a tip have a diameter of 100-200 nm and 10-30 nm and length (stem) 300-500 nm and (tip) 200-600 nm respectively. Structural analysis showed that ZnO nanoneedles are single crystalline with wurtzite hexagonal phase and grown along the c-axis direction. Room temperature photoluminescence spectrum of ZnO nanoneedles showed a strong ultra-violet emission at 381 nm and weak green emission at 580 nm. The ZnO nanotip can be explored for heterojunction formation.

Original languageBritish English
Pages (from-to)166-169
Number of pages4
JournalJournal of Physics and Chemistry of Solids
Volume74
Issue number1
DOIs
StatePublished - Jan 2013

Keywords

  • A. Nanostructures
  • B. Chemical synthesis
  • C. X-ray diffraction
  • D. Optical properties

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