Jump to main content
Jump to site search

Issue 12, 2002
Previous Article Next Article

Excitation energy transfer and spatial exciton confinement in polyfluorene blends for application in light-emitting diodes

Author affiliations

Abstract

We present picosecond time-resolved studies of thin films of two polyfluorene blends, combining a relatively high energy-gap poly(9,9-dioctylfluorene), PFO, and a polyfluorene derivative with a smaller gap. These studies show both efficient energy transfer from the donor to the acceptor, as well as spatial confinement of the excitons in the acceptor polymers. The optoelectronic characteristics of light-emitting diodes fabricated with such blends reflect the contribution of these two processes. The electroluminescence is almost exclusively from the acceptor polyfluorenes and we observe a significant improvement of the electroluminescence efficiency of the light-emitting diodes fabricated with such blends in comparison to those based on neat films of the polyfluorenes.

Graphical abstract: Excitation energy transfer and spatial exciton confinement in polyfluorene blends for application in light-emitting diodes

Back to tab navigation

Publication details

The article was received on 24 Jun 2002, accepted on 24 Sep 2002 and first published on 23 Oct 2002


Article type: Paper
DOI: 10.1039/B206040J
Citation: J. Mater. Chem., 2002,12, 3523-3527
  •   Request permissions

    Excitation energy transfer and spatial exciton confinement in polyfluorene blends for application in light-emitting diodes

    A. Charas, J. Morgado, J. M. G. Martinho, A. Fedorov, L. Alcácer and F. Cacialli, J. Mater. Chem., 2002, 12, 3523
    DOI: 10.1039/B206040J

Search articles by author

Spotlight

Advertisements