Synthesis and electroluminescence properties of zinc(2,2′ bipyridine)8-hydroxyquinoline
- Rai, Virendra Kumar
- Srivastava, Ritu
- Chauhan, Gayatri
- Saxena, Kanchan
- Bhardwaj, Ramil Kumar
- Chand, Suresh
- Kamalasanan, M. N.
Publication date
June 2008
DOI Publisher
Elsevier BV ISSN
0167-577X Citation count (estimate)
11Abstract
New electroluminescent material, namely zinc(2,2′ bipyridine)8-hydroxyquinoline [Zn(Bpy)q] has been synthesized and characterized. A solution of Zn(Bpy)q showed absorption maxima at 382 nm and 342 nm in toluene solution attributed to π − π⁎ transition. The photoluminescence spectrum in toluene solution showed peak at 545 nm. The material was stable up to 350 °C. Organic light emitting diode (OLED) fabricated with the structure ITO/α-NPD/Zn(Bpy)q/Alq3/LiF/Al exhibits a broad electroluminescence peak at 548 nm. The maximum current efficiency of OLED was 1.34 cd/A at 5 V and the maximum power efficiency 0.84 lm/W at 5 V
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