Cyclometalated Red Iridium(III) Complexes Containing Carbazolyl-Acetylacetonate Ligands: Efficiency Enhancement in Polymer LED Devices

Cyclometalated Red Iridium(III) Complexes Containing Carbazolyl-Acetylacetonate Ligands: Efficiency Enhancement in Polymer LED Devices

New red emitting cyclometalated Ir(III) complexes containing carbazolyl-acetylacetonate ligands (1, 2) were prepared and then compared to the commonly used reference emitter [(btp) sub(2)Ir(III)(acac)]. For a range of concentrations the new complexes revealed better luminous efficiencies than [(btp)...

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Veröffentlicht in:Platinum metals review 2011-04, Vol.55 (2), p.144-145
Hauptverfasser: Tian, N, Aulin, Y V, Lenkeit, D, Pelz, S, Mikhnenko, O V, Blom, PWM, Loi, MA, Holder, E
Format: Artikel
Sprache:eng
Schlagworte:
Decay
Devices
Emittance
Ligands
Light-emitting diodes
Phosphorescence
Platinum metals
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Zusammenfassung:New red emitting cyclometalated Ir(III) complexes containing carbazolyl-acetylacetonate ligands (1, 2) were prepared and then compared to the commonly used reference emitter [(btp) sub(2)Ir(III)(acac)]. For a range of concentrations the new complexes revealed better luminous efficiencies than [(btp) sub(2)Ir(III)(acac)]. The phosphorescence decay times of the newly designed triplet emitters are significantly shorter making them attractive candidates for applications in advanced organic and polymer LEDs.
ISSN:0032-1400