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Proceedings Paper

On the electro-optical behavior of an OLED based on europium and the relationship with electrical transport phenomena
Author(s): L. Pereira; G. Santos; W. Simões
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Paper Abstract

This work we presents a detailed result of Organic Light Emitting Diodes based on europium complex as emitting layer, the tris (dibenzoylmethane) – mono (4,7-dimethylphenantroline) europium (III) – Eu(DBM)3phen. The electrical d.c. and a.c. behavior is analyzed and correlated with the electroluminescence data. The electroluminescence spectra show the Eu3+ ion transitions, with the main emission at 612 nm. The driving voltage is about 20 V although the electrical current is only 0.1 mA (Wall Plug Efficiency up to 4×10-3 %). Under some conditions, emissions from others organic emitters can be observed. A model considering the charge confinement and the materials energy levels is proposed and discussed.

Paper Details

Date Published: 22 August 2014
PDF: 8 pages
Proc. SPIE 9286, Second International Conference on Applications of Optics and Photonics, 92860Q (22 August 2014); doi: 10.1117/12.2063746
Show Author Affiliations
L. Pereira, Univ. de Aveiro (Portugal)
G. Santos, Univ. de São Paulo (Brazil)
W. Simões, Univ. de Aveiro (Portugal)

Published in SPIE Proceedings Vol. 9286:
Second International Conference on Applications of Optics and Photonics
Manuel Filipe P. C. Martins Costa; Rogério Nunes Nogueira, Editor(s)

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