Core-shell nanoparticle of silver coated with light-emitting rubrene: Surface plasmon enhanced photoluminescence

Yoon Deok Han, Jin Woo Lee, Dong Hyuk Park, Seung Ho Yang, Bo Kyung Kim, Jeongyong Kim, Jinsoo Joo

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Silver (Ag) nanoparticles (NPs) with a diameter of 50-100 nm were fabricated by using a reduction process of silver nitrate with sodium citrate. Using the Ag NPs, hybrid core (Ag)-shell (organic light-emitting rubrene) NPs were prepared through a hydrothermal process. The formation of hybrid core-shell NP of Ag-rubrene was confirmed through transmission electron microscope images. From ultraviolet and visible absorption spectra, the Ag and rubrene characteristic peaks were simultaneously observed for the core-shell NPs. Using a high-resolution laser confocal microscope (LCM), the photoluminescence (PL) intensity of the Ag-rubrene core-shell single NP was about 300 times higher than that of the rubrene single NP. This remarkable enhancement of PL efficiency in the core-shell single NP is due to the energy transfer effect in the surface plasmon resonance coupling between Ag and rubrene materials.

Original languageEnglish
Pages (from-to)2103-2106
Number of pages4
JournalSynthetic Metals
Volume161
Issue number19-20
DOIs
Publication statusPublished - 2011 Oct

Keywords

  • Core-shell
  • Nanoparticle
  • Photoluminescence
  • Rubrene
  • Silver
  • Surface plasmon

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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