Surface-plasmon-enhanced band emission of ZnO nanoflowers decorated with Au nanoparticles

Saji Thomas Kochuveedu, Ji Hye Oh, Young Rag Do, Dong Ha Kim

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

A simple strategy was used to enhance band emission through the transfer of defect emission from ZnO to Au by using the energy match between the defect emission of ZnO and the surface plasmon absorbance of Au NPs through decorating the surface of ZnO nanoflowers with Au nanoparticles (Au NPs). The ZnO nanostructure, which was comprised of six nanorods that were attached on one side in a flower-like fashion, was synthesized by using a hydrothermal method. The temperature-dependent morphology and detailed growth mechanism were studied. The influence of the density of the Au NPs that were deposited onto the surface of ZnO on photoluminescence was investigated to optimize the configuration of the ZnO/Au system in terms of the maximum band emission.

Original languageEnglish
Pages (from-to)7467-7472
Number of pages6
JournalChemistry - A European Journal
Volume18
Issue number24
DOIs
StatePublished - 11 Jun 2012

Keywords

  • electron transfer
  • gold
  • nanoparticles
  • photoluminescence
  • surface plasmon resonance

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