Al Complex as a Host Material for High Efficiency Green Phosphorescent Organic Light-Emitting Diodes

An Al based complex, tris((2-(1H-pyrazol-1-yl)pyridin-3-yl)oxy)aluminum (AlOx), was synthesized as the host material for green phosphorescent organic light-emitting diodes (PHOLEDs). The AlOx host material showed a high triplet energy of 2.75 eV for efficient energy transfer to green-emitting iridiu...

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Veröffentlicht in:	Journal of physical chemistry. C 2013-09, Vol.117 (38), p.19353-19356
Hauptverfasser:	Oh, Chan Seok, Lee, Jun Yeob
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Electronics Exact sciences and technology Optoelectronic devices Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Online-Zugang:	Volltext
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Zusammenfassung:	An Al based complex, tris((2-(1H-pyrazol-1-yl)pyridin-3-yl)oxy)aluminum (AlOx), was synthesized as the host material for green phosphorescent organic light-emitting diodes (PHOLEDs). The AlOx host material showed a high triplet energy of 2.75 eV for efficient energy transfer to green-emitting iridium(III) tris(2-phenylpyridine) (Ir(ppy)3) triplet emitter. A high quantum efficiency of 22.5% was obtained in the green PHOLEDs fabricated using the AlOx host material at a Ir(ppy)3 doping concentration of 3%.
ISSN:	1932-7447 1932-7455
DOI:	10.1021/jp4069976