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

Mi Yeon Cho, Kyoungah Cho, Sangsig Kim

Research output: Contribution to journalArticle

4 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

Keywords

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

ASJC Scopus subject areas

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

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