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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 17 — Aug. 18, 2008
  • pp: 13391–13397

Quantum efficiency enhancement in film by making nanoparticles of polyfluorene

Ilkem Ozge Huyal, Tuncay Ozel, Donus Tuncel, and Hilmi Volkan Demir  »View Author Affiliations

Optics Express, Vol. 16, Issue 17, pp. 13391-13397 (2008)

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We report on conjugated polymer nanoparticles of polyfluorene that were formed to exhibit higher fluorescence quantum efficiency in film (68%) and reduce undesired emission peak wavelength shifts in film (by 20 nm), compared to the solid-state polymer thin film made directly out of the same polymer solution without forming nanoparticles. Using the facile reprecipitation method, solutions of poly[9,9-dihexyl-9H-fluorene] in THF were added at different volume ratios to obtain different size distributions of nanoparticle dispersions in water. This allowed us to control the size-dependent optical emission of our polyfluorene nanoparticles. Such organic nanoparticles hold great promise for use as efficient emitters in optoelectronic device applications.

© 2008 Optical Society of America

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(160.4890) Materials : Organic materials
(230.3670) Optical devices : Light-emitting diodes
(250.0250) Optoelectronics : Optoelectronics
(250.3680) Optoelectronics : Light-emitting polymers

ToC Category:

Original Manuscript: May 13, 2008
Revised Manuscript: July 28, 2008
Manuscript Accepted: August 13, 2008
Published: August 15, 2008

Ilkem O. Huyal, Tuncay Ozel, Donus Tuncel, and Hilmi V. Demir, "Quantum efficiency enhancement in film by making nanoparticles of polyfluorene," Opt. Express 16, 13391-13397 (2008)

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