Luminescence enhancement by surface plasmon assisted Förster resonance energy transfer in quantum dots and light emitting polymer hybrids with Au nanoparticles

Yong Baek Lee, Seok Ho Lee, Sung Yeoun Park, Cheol Joon Park, Kwang Sup Lee, Jeongyong Kim, Jinsoo Joo

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Hybrid nanowires (NWs) of light-emitting poly(3-hexylthiophene) (P3HT) blended with gold nanoparticles (Au-NPs) were fabricated by a wetting method. The functionalized CdSe/ZnS quantum dots (QDs) were attached to the surfaces of P3HT/Au-NPs NWs. The nanoscale photoluminescence (PL) characteristics of the P3HT, P3HT/Au-NPs, and QDs/P3HT/Au-NPs single NWs were investigated using a high resolution laser confocal microscope (LCM). For a P3HT/Au-NPs single NW, the LCM PL intensity of the P3HT NW decreased due to the luminescence quenching effect by the blending with Au-NPs. However, the LCM PL intensity of the P3HT/Au-NPs NW drastically increased when the QDs were attached to the surface of the NW. The PL enhancement of the P3HT NW part in the hybrid QDs/P3HT/Au-NPs single NW originated from the Förster resonance energy transfer (FRET) effect between the QDs and the P3HT NW, which was assisted by the surface plasmon (SP) coupling of Au-NPs with the QDs. Based on the analysis of time-resolved PL spectra, the exciton lifetimes of the QDs for the QDs/P3HT/Au-NPs NW were found to decrease considerably in comparison with those of the QDs/P3HT NWs without Au-NPs. We also found that the energy transfer rate of the QDs/P3HT NW increased from 0.76 to 0.93 with the Au-NPs. These observations support the notion of SP assisted FRET effect in hybrid nanosystems.

Original languageEnglish
Pages (from-to)130-135
Number of pages6
JournalSynthetic Metals
Volume187
Issue number1
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

Energy transfer
Semiconductor quantum dots
Luminescence
Nanowires
Polymers
energy transfer
nanowires
quantum dots
luminescence
Nanoparticles
nanoparticles
augmentation
polymers
Photoluminescence
photoluminescence
Microscopes
microscopes
poly(3-hexylthiophene)
Lasers
Nanosystems

Keywords

  • Au nanoparticle
  • CdSe/ZnS quantum dot
  • Förster resonance energy transfer
  • Nanowire
  • Poly(3-hexylthiophene)
  • Surface plasmon

ASJC Scopus subject areas

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

Cite this

Luminescence enhancement by surface plasmon assisted Förster resonance energy transfer in quantum dots and light emitting polymer hybrids with Au nanoparticles. / Lee, Yong Baek; Lee, Seok Ho; Park, Sung Yeoun; Park, Cheol Joon; Lee, Kwang Sup; Kim, Jeongyong; Joo, Jinsoo.

In: Synthetic Metals, Vol. 187, No. 1, 01.01.2014, p. 130-135.

Research output: Contribution to journalArticle

Lee, Yong Baek ; Lee, Seok Ho ; Park, Sung Yeoun ; Park, Cheol Joon ; Lee, Kwang Sup ; Kim, Jeongyong ; Joo, Jinsoo. / Luminescence enhancement by surface plasmon assisted Förster resonance energy transfer in quantum dots and light emitting polymer hybrids with Au nanoparticles. In: Synthetic Metals. 2014 ; Vol. 187, No. 1. pp. 130-135.
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