Enhanced photoluminescence of ZnO nanorods via coupling with localized surface plasmon of Au nanoparticles

Rizwan Khan, Jin Hyeon Yun, Kang Bin Bae, In-Hwan Lee

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

We demonstrated the synthesis of ZnO nanorods by using a facile solution route at low temperature. Au nanoparticles were deposited on the surface of ZnO nanorods by an in-situ solution method. The ZnO nanostructures had nanorod-like morphology in large quantity and possessed high crystallinity. An enhancement of ultraviolet emission of ZnO nanorods was observed as a result of Au nanoparticles decoration, while green emission was suppressed. This excellent photoluminescence performance is attributed to surface-plasmon-mediated quenching of defect emission and the enhancement of band-edge emission. The defect transition energy (green) of ZnO nanorods is in resonance with the localized surface plasmon energy of the Au nanoparticles, which led to the conversion of deep level green emission into band-edge ultraviolet emission.

Original languageEnglish
Pages (from-to)643-646
Number of pages4
JournalJournal of Alloys and Compounds
Volume682
DOIs
Publication statusPublished - 2016 Oct 15
Externally publishedYes

Keywords

  • Nanorods
  • Photoluminescence
  • Surface plasmons
  • ZnO

ASJC Scopus subject areas

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

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