Experimental and numerical optical characterization of plasmonic copper nanoparticles embedded in ZnO fabricated by ion implantation and annealing

Khai Q. Le, Hieu P.T. Nguyen, Quang Minh Ngo, Adil Canimoglu, Nurdogan Can

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Here we describe the successfully fabrication of metal nanoparticle crystals by implanting copper (Cu) ions into single zinc oxide (ZnO) crystals with ion energy of 400 keV at ion doses of 1 × 1016 to 1 × 1017 ions/cm2. After implantation and post-annealing treatment, the Cu implanted ZnO produces a broad range of luminescence emissions, ranging from green to yellow. A green luminescence peak at 550 nm could be ascribed to the isolated Cu ions. The changes in luminescence emission bands between the initial implant and annealed suggest that the implants give rise to clustering Cu nanoparticles in the host matrix but that the annealing process dissociates these. Numerical modelling of the Cu nanoparticles was employed to simulate their optical properties including the extinction cross section, electron energy loss spectroscopy and cathodoluminescence. We demonstrate that the clustering of nanoparticles generates Fano resonances corresponding to the generation of multiple resonances, while the isolation of nanoparticles results in intensity amplification.

Original languageEnglish (US)
Pages (from-to)246-253
Number of pages8
JournalJournal of Alloys and Compounds
Volume669
DOIs
StatePublished - Jun 5 2016

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Keywords

  • Cu
  • Fano resonances
  • Ion implantation
  • Luminescence
  • Metallic nanoparticles
  • Plasmonic
  • ZnO

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