Enhanced performance of polythiophene derivative based light emitting diodes by addition of europium and ruthenium complexes
1998; Elsevier BV; Volume: 98; Issue: 1 Linguagem: Inglês
10.1016/s0379-6779(98)00155-6
ISSN1879-3290
AutoresMario J. Cazeca, Kethinni G. Chittibabu, Jae Hyun Kim, Jayant Kumar, Aloke Jain, Woohong Kim, Sukant K. Tripathy,
Tópico(s)Organic Electronics and Photovoltaics
ResumoFabrication of polymer light emitting diodes (PLEDs) from a urethane containing processable polythiophene derivative, poly[2-(3-thienyl) ethanol n-butoxy carbonylmethyl urethane], (PURET) and its composites with luminescent Ruthenium (II) and Europium (III) complexes is discussed. Enhanced electroluminescence (EL) performance was observed, when 1% by weight of europium (III) or ruthenium (II) complexes were added to the PURET polymer. Multi-layered devices with polyaniline as a hole injecting layer and tris-8-hydroxyquinoline-aluminum as an electron injecting layer have also been fabricated. PLEDs from PURET polymer have a threshold voltage of 3.6 V and emit an orange-red light with a brightness of about 500 cd/m2 under forward bias of 9 V, upon the addition of 1% of europium (III) thenoyl trifluoroacetonate complex to the polymer.
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