Luminescence shift of electrospun ZnO/MEH-PPV/PEO composite nanofibers

Mi Yeon Cho, Kyoungah Cho, Sangsig Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The photoluminescence characteristics of electrospun ZnO/poly[2-methoxy-5- (2-ethylhexyloxy)-1,4-phenylenevinylene]/poly(ethylene oxide) (ZnO/MEH-PPV/PEO) composite nanofibers with various composite ratios of ZnO nanoparticles (NPs) and MEH-PPV are investigated in this study. The photoluminescence spectra of the nanofibers show sequential red- and blue-shifts in the peak wavelength with increasing concentration of ZnO NPs. For the nanofibers in which their concentration is relatively low, the dispersed ZnO NPs induce the aggregation of MEH-PPV, resulting in the red-shift of the peaks. In contrast, for the nanofibers with relatively high concentrations of ZnO NPs (over 50%), the blue-shift of the peaks occurs. The mechanisms of the red- and blue-shifts are discussed in this paper.

Original languageEnglish
Pages (from-to)79-82
Number of pages4
JournalJournal of Luminescence
Volume134
DOIs
Publication statusPublished - 2013 Feb 1

Fingerprint

Nanofibers
Polyethylene oxides
Luminescence
Nanoparticles
blue shift
red shift
luminescence
nanoparticles
composite materials
shift
Composite materials
Photoluminescence
photoluminescence
Ethylene Oxide
ethylene oxide
Agglomeration
Wavelength
poly(2-methoxy-5-(2'-ethylhexyloxy)-p-phenylenevinylene)
wavelengths

Keywords

  • Electrospun fibers
  • Luminescence
  • MEH-PPV
  • ZnO nanoparticle

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Chemistry(all)
  • Biochemistry
  • Biophysics

Cite this

Luminescence shift of electrospun ZnO/MEH-PPV/PEO composite nanofibers. / Cho, Mi Yeon; Cho, Kyoungah; Kim, Sangsig.

In: Journal of Luminescence, Vol. 134, 01.02.2013, p. 79-82.

Research output: Contribution to journalArticle

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AB - The photoluminescence characteristics of electrospun ZnO/poly[2-methoxy-5- (2-ethylhexyloxy)-1,4-phenylenevinylene]/poly(ethylene oxide) (ZnO/MEH-PPV/PEO) composite nanofibers with various composite ratios of ZnO nanoparticles (NPs) and MEH-PPV are investigated in this study. The photoluminescence spectra of the nanofibers show sequential red- and blue-shifts in the peak wavelength with increasing concentration of ZnO NPs. For the nanofibers in which their concentration is relatively low, the dispersed ZnO NPs induce the aggregation of MEH-PPV, resulting in the red-shift of the peaks. In contrast, for the nanofibers with relatively high concentrations of ZnO NPs (over 50%), the blue-shift of the peaks occurs. The mechanisms of the red- and blue-shifts are discussed in this paper.

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