Efficiency phosphorescent OLEDs with a low roll-off based on a hetero-triplet iridium complex
文献类型：期刊论文
| 作者 | Han, LL; Zhang, DY(张东煜) ; Wang, J; Lan, ZG; Yang, RQ
|
| 刊名 | DYES AND PIGMENTS
 |
| 出版日期 | 2015 |
| 卷号 | 113页码:6 |
| 关键词 | Heterocyclometalated iridium complex Hetero-triplet iridium complex Triplet-triplet annihilation Efficiency roll-off Exciton density OLED |
| 通讯作者 | Zhang, DY (张东煜) |
| 英文摘要 | In order to explore the triplet triplet annihilation in cyclometalated iridium complexes, a hetero-triplet iridium complex [Ir(ppy)(2)pbi] employing two 2-phenylpyridine (Hppy) ligands and one 1,2-diphenyl-1H-benzo[d]-imidazole (Hpbi) ligand with similar triplet energies was synthesized. A device based on Ir(ppy)(2)pbi exhibited high current efficiency 26.7 cd/A at high doping concentration 12 wt%. More interestingly, the current efficiency was still maintained at 25.8 cd/A when the current density was above 253.2 mA/cm(2). The efficiency roll-off was only about 3.4%, much lower than that of traditional cyclometalated iridium complexes. It is proposed that the complicated energy level and unsymmetical ligand in Ir(ppy)(2)pbi may help to suppress the triplet triplet annihilation. (C) 2014 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.sinano.ac.cn/handle/332007/3442]  |
| 专题 | 苏州纳米技术与纳米仿生研究所_印刷电子学部_崔铮团队 |
| 推荐引用方式 GB/T 7714 | Han, LL,Zhang, DY,Wang, J,et al. Efficiency phosphorescent OLEDs with a low roll-off based on a hetero-triplet iridium complex[J]. DYES AND PIGMENTS,2015,113:6. |
| APA | Han, LL,Zhang, DY,Wang, J,Lan, ZG,&Yang, RQ.(2015).Efficiency phosphorescent OLEDs with a low roll-off based on a hetero-triplet iridium complex.DYES AND PIGMENTS,113,6. |
| MLA | Han, LL,et al."Efficiency phosphorescent OLEDs with a low roll-off based on a hetero-triplet iridium complex".DYES AND PIGMENTS 113(2015):6. |
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