Translator Disclaimer
12 November 2007 Light emission optimization of europium based complex in multilayer organic light emitting diodes
Author Affiliations +
Abstract
In this work a detailed study of the electroluminescence of an Organic Light Emitting Diode based on Europium Complex is studied as a function of the emissive layer thickness and growth rate evaporation. The device structure is glass:ITO / TPD [N,N' - bis (3 - methylphenyl) - N,N' - diphenylbenzidine] / Eu(DBM)3phen [tris (dibenzoylmethane) - mono (4,7-dimethylphenantroline) europium (III)] / Alq3 [aluminum - tris (8 - hydroxyquinoline)] / Aluminum. The minimum driving voltage is about 15 Volts although the electrical current is about only 2 mA (wall plug efficiency up to 0.002 %). The electroluminescence spectra and external efficiency are clearly dependent on the Eu (DBM)3phen layer thickness and growth rate evaporation. This results in a strong color change (CIE coordinates). With these results, a model for the device opto-electrical behavior is presented, allowing the device final optimization.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. Santos, F. J. Fonseca, A. M. Andrade, M. Peres, T. Monteiro, W. Simões, and L. Pereira "Light emission optimization of europium based complex in multilayer organic light emitting diodes", Proc. SPIE 6655, Organic Light Emitting Materials and Devices XI, 66551U (12 November 2007); https://doi.org/10.1117/12.734818
PROCEEDINGS
8 PAGES


SHARE
Advertisement
Advertisement
Back to Top