Title: Narrow bandwidth red electroluminescence from solution-processed lanthanide-doped polymer thin films
Authors: O'Riordan, Alan
O'Connor, Eamon
Moynihan, Shane
Llinares, Xavier
Van Deun, Rik
Fias, Pascal
Nockemann, Peter
Binnemans, Koen
Redmond, Gareth # ×
Issue Date: 2005
Publisher: Elsevier science sa
Series Title: Thin Solid Films vol:491 issue:1-2 pages:264-269
Abstract: Narrow bandwidth red electroluminescence from OLED devices fabricated using a simple solution-based approach is demonstrated. A spin-casting method is employed to fabricate organic light emitting diode (OLED) devices comprising a poly(N-vinylcarbazole) (PVK) host matrix doped with a europium beta-diketonate complex, Eu(dbm)(3)(Phen) (dibenzoylmethanate, dbm; 1,10-phenanthroline, Phen) on glass/ indium tin oxide (ITO)/3,4-polyethylene-dioxythiophene-polystyrene sulfonate (PEDOT) substrates. Saturated red europium ion emission, based on the 5D0 -> 7F2 transition, is centered at a wavelength of 612 nm with a full width at half maximum of 3.5 rim. A maximum external quantum efficiency of 6.3 x 10(-2) cd/A (3.1 X 10(-2)%) and a maximum luminance of 130 cd/M-2 at 400 mA/cm(2) and 25 V is measured for ITO/PEDOT/PVK:Eu(dbm)3(Phen)/Ca/Al devices. This measured output luminance is comparable to that of devices fabricated using more sophisticated small molecule evaporation techniques.
ISSN: 0040-6090
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Design and Synthesis
× corresponding author
# (joint) last author

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