| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1442208 | Synthetic Metals | 2011 | 9 Pages |
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, 6.13 lm/W, 8.86% at 20 mA/cm2 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, 1.02 lm/W and 5.35% at 20 mA/cm2, respectively.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► We develop six Ir(III) complexes with 5-acetyl-2-phenylpyridine derivatives as ligands. ► We examine changes in increase of π-conjugation in the phenyl moiety. ► Increasing π-conjugation will improve color purity. ► These new Ir(III) complexes (1–6) possess highly efficient electroluminescent properties.
