Photoluminescence enhancement from hybrid structures of metallic single-walled carbon nanotube/ZnO films

Young Ran Park, Na Liu, Cheol Jin Lee

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We investigated the dependence of localized surface plasmon resonance (LSPR) coupled photoluminescence (PL) emission on the density of a metallic single-walled carbon nanotube (m-SWCNT). The m-SWCNTs of various densities were deposited on top of ZnO films by spin coating and filtration transfer method to form the hybrid structures. We observed PL enhancement from ZnO films deposited with spin coated m-SWCNT, comparing with pure ZnO film. The m-SWCNT acts as absorbers for the light emitted due to SPR. After resonant excitation, hot electrons in m-SWCNT are created in high energy states, which can then transfer from the m-SWCNT to the conduction band of the ZnO films. We discuss the relationship between the hot electron flow generated by internal photoemission and LSPR.

Original languageEnglish
Pages (from-to)2026-2032
Number of pages7
JournalCurrent Applied Physics
Volume13
Issue number9
DOIs
Publication statusPublished - 2013

Keywords

  • Hot electron
  • Localized surface plasmon
  • PL enhancement
  • ZnO
  • m-SWCNT

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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