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 journalArticlepeer-review

    14 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

    • General Materials Science
    • General Physics and Astronomy

    Fingerprint

    Dive into the research topics of 'Photoluminescence enhancement from hybrid structures of metallic single-walled carbon nanotube/ZnO films'. Together they form a unique fingerprint.

    Cite this