Articles
  • Enhancement of visible light emission from Tb-doped ZnO nanorods grown on silicon substrate
  • Kyoung-Kook Kima and Il-Kyu Parkb,*
  • a Department of Nano-Optical Engineering, Korea Polytechnic University, Siheung 429-793, Korea b Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul 139-743, South Korea
Abstract
We report on the enhancement of visible light emission from Tb-doped ZnO nanorods (NRs) fabricated on Si substrates using a simple hydrothermal process without post-thermal annealing. Structural and chemical investigations revealed that the Tb atoms were successfully incorporated into the ZnO crystal lattice without forming Tb-related alloys or impurities. Photoluminescence spectra show the typical double spectral shape of ZnO nanostructures with emission bands in the UV and visible spectral range. The visible light-emission increased linearly with the Tb-content in the solution. The emission mechanism was verified based on the energy band structure of the Tb-doped ZnO NRs

Keywords: Nanomaterials, Luminescence, Zinc oxide, Optical materials, Hydrothermal synthesis

This Article

  • 2017; 18(6): 435-439

    Published on Jun 30, 2017