Abstract
Novel red emitting organic luminescent complexes, namely Eu0.5Ln0.5(TTA)3 Phen (Eu: europium, Ln: Y/Tb, Y: yttrium, Tb: terbium, TTA: thenoyl tri fluoro acetone, Phen: phenanthroline) were synthesized by solution technique, maintaining stoichiometric ratio. These complexes were characterized by various techniques such as XRD, optical absorption and photoluminescence (PL) spectra. Electroluminescence cells were designed by sandwiching Eu0.5Ln0.5(TTA)3Phen between indium tin oxide (ITO) and aluminum (Al). Voltage⿿current characteristics and voltage⿿brightness characteristics of the developed electroluminescent cell were carried out. Turn on voltage of both the devices was found to be 9V. These devices emit intense red emission at 611nm, proving their potential applications as organic light emitting diodes and displays.
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