On the electro-optical behavior of an OLED based on europium and the relationship with electrical transport phenomena

L. Pereira; G. Santos; W. Simões

doi:10.1117/12.2063746

22 August 2014 On the electro-optical behavior of an OLED based on europium and the relationship with electrical transport phenomena

L. Pereira, G. Santos, W. Simões

Author Affiliations +

Proceedings Volume 9286, Second International Conference on Applications of Optics and Photonics; 92860Q (2014) https://doi.org/10.1117/12.2063746
Event: Second International Conference on Applications of Optics and Photonics, 2014, Aveiro, Portugal

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.

Citation Download Citation

L. Pereira, G. Santos, and W. Simões "On the electro-optical behavior of an OLED based on europium and the relationship with electrical transport phenomena", Proc. SPIE 9286, Second International Conference on Applications of Optics and Photonics, 92860Q (22 August 2014); https://doi.org/10.1117/12.2063746

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