14 November 2007 Electro-optical measurements, stability, and physical charge behavior of rare-earth based organic light emitting diode
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Abstract
In this work we report for the first time the electroluminescence of two different kinds of rare earth complexes based Organic Light Emitting Diodes, the Tb(ACAC)3bipy [Tris (acetylacetonate) - 2,2' - bipyridinyl - terbium(III)] and the Eu(TTA)3bipy [tris(4,4,4 -trifluoro -1 - (2 - thienyl) -1,3 - butanediono - 2,2' - bipyridinyl - europium(III)]. In both devices the corresponding electroluminescence spectrum is obtained (red for europium with (x,y) CIE coordinates near (0.64, 0.34) and green for terbium near (0.28, 0.55) coordinates) at a driving voltage near 16 - 17 V with a maximum electrical current of 1 mA. The Wall Plug Efficiency is about 10-3% in both cases.
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G. Santos, F. J. Fonseca, A. M. Andrade, V. Deichmann, L. Ackcelrud, M. Peres, T. Monteiro, W. Simões, L. Pereira, "Electro-optical measurements, stability, and physical charge behavior of rare-earth based organic light emitting diode", Proc. SPIE 6655, Organic Light Emitting Materials and Devices XI, 66551V (14 November 2007); doi: 10.1117/12.734901; https://doi.org/10.1117/12.734901
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