Electroluminescent Performances of Iridium Complexes with Dibenzo-18-crown-6 |
| |
| Authors: | Aihui Liang Jun Tang Xiulan Yang Ping Cai Wenjin Wu Zhiping Wang Mingzhong Cai |
| |
| Affiliation: | 1.College of Chemistry and Chemical Engineering,Jiangxi Normal University,Nanchang,People’s Republic of China;2.School of Materials Science and Engineering & Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guilin,People’s Republic of China |
| |
| Abstract: | Three novel iridium complexes with dibenzo-18-crown-6 substituted 2-penylpyridine (ppy) ligand have been synthesized and characterized. In order to investigate the electroluminescent properties of the resulting iridium complexes, polymer light-emitting diodes (PLEDs) with device structure of ITO/PEDOT:PSS/Emissive Layer/LiF/Al are fabricated using soluble poly(N-vinylcarbazole) (PVK) as the host and the resultant iridium complexes as dopant. Consequently, the PLEDs with G1 as dopant exhibited the highest luminous efficiencies of 13.3 cd A?1 and the maximal brightness of 13523 cd m?2 at the doping concentration of 8 wt%. Moreover, the iridium complexes G1, G2 and G3 exhibited nearly identical Commission Internationale de L’Eclairage (CIE) coordinates of (0.34?±?0.1, 0.62?±?0.1), which are very close to the CIE coordinates of (0.33, 0.61) for Ir(ppy)3. This indicates that the CIE coordinates of the iridium complexes would not be influenced as the dibenzo-18-crown-6 groups pended on the meta-position of benzene ring of ppy. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
