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Cyclometalated iridium(III) complexes with 5-acetyl-2-phenypyridine derived ligands for red phosphorescent OLEDs
- Authors
- Lee, KH[Lee, Kum Hee]; Kang, HJ[Kang, Hyun Ju]; Lee, SJ[Lee, Seok Jae]; Seo, JH[Seo, Ji Hyun]; Kim, YK[Kim, Young Kwan]; Yoon, SS[Yoon, Seung Soo]
- Issue Date
- Jun-2011
- Keywords
- 5-Acetyl-2-phenypyridine; Orange-red Ir(III) complexes; PHOLEDs
- Citation
- SYNTHETIC METALS, v.161, no.11-12, pp.1113 - 1121
- Indexed
- SCIE
SCOPUS
- Journal Title
- SYNTHETIC METALS
- Volume
- 161
- Number
- 11-12
- Start Page
- 1113
- End Page
- 1121
- ISSN
- 0379-6779
- Abstract
- A series of new iridium complexes with 5-acetyl-2-phenylpyridine derivatives as ligands was developed. The complexes exhibited high EL performance when applied to OLEDs. These materials showed red emission with a peak at 575-636 nm. In particular, one of the devices in this study showed a maximum luminous efficiency, maximum power efficiency, external quantum efficiency and CIE coordinates of 29.0 cd/A, 6.131m/W, 8.86% at 20 mA/cm(2) and (0.57, 0.43) at 10 V, respectively. In addition, a deep red OLED with CIE coordinates of (0.67, 0.32) at 10 V exhibited a maximum luminous efficiency, maximum power efficiency and external quantum efficiency of 5.61 cd/A, 1.021m/W and 5.35% at 20 mA/cm(2), respectively. (C) 2011 Elsevier B.V. All rights reserved.
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