Robust Tris-Cyclometalated Iridium(III) Phosphors with Ligands for Effective Charge Carrier Injection/Transport: Synthesis, Redox, Photophysical, and Electrophosphorescent Behavior
文献类型：期刊论文
| 作者 | Zhou, Guijiang1,2; Wang, Qi3; Ho, Cheuk-Lam1,2; Wong, Wai-Yeung1,2; Ma, Dongge3; Wang, Lixiang3; Lin, Zhenyang4 |
| 刊名 | CHEMISTRY-AN ASIAN JOURNAL
 |
| 出版日期 | 2008 |
| 卷号 | 3期号:10页码:1830-1841 |
| 关键词 | Electron Transport Iridium Main Group Elements Phosphorescence Uv/vis Spectroscopy |
| ISSN号 | 1861-4728 |
| DOI | 10.1002/asia.200800074 |
| 英文摘要 | With the target to design and develop new functionalized green triplet light emitters that possess distinctive electronic properties for robust and highly efficient phosphorescent organic light-emitting diodes (PHOLEDs), a series of bluish-green to yellow-green phosphorescent tris-cyclometalated homoleptic iridium(III) complexes [Ir(ppy-X)(3)] (X=SiPh3, GePh3, NPh2, POPh2, OPh, SPh, SO2Ph, Hppy=2-phenylpyridine) have been synthesized and fully characterized by spectroscopic, redox, and photophysical methods. By chemically manipulating the lowest triplet-state character of Ir(ppy)(3) with some functional main-group 14-16 moieties on the phenyl ring of ppy, a new family of metallophosphors with high-emission quantum yields, short triplet-state lifetimes, and good hole-injection/hole-transporting or electron-injection/electron-transporting properties can be obtained. Remarkably, all of these Ir-III complexes show outstanding electrophosphorescent performance in multi-layer doped devices that surpass that of the state-of-the-art green-emitting dopant Ir(ppy)(3). The devices described herein can reach the maximum external quantum efficiency (eta(ext)) of 12.3%, luminance efficiency (eta(L)) of 50.8 cd A(-1), power efficiency (eta(p)) of 36.9 Lm W-1 for [Ir(ppy-SiPh3)(3)], 13.9%, 60.8 cd A(-1), 49.1 Lm W-1 for [Ir(ppy-NPh2)(3)], and 10.1%, 37.6 cd A(-1), 26.1 Lm W-1 for [Ir(ppy-SO2Ph)(3)]. These results provide a completely new and effective strategy for carrier injection into the electrophosphor to afford high-performance PHOLEDs suitable for various display applications. |
| 语种 | 英语 |
| WOS记录号 | WOS:000259968700009 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/64811]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wong, Wai-Yeung |
| 作者单位 | 1.Hong Kong Baptist Univ, Dept Chem, Kowloon Tong, Hong Kong, Peoples R China 2.Hong Kong Baptist Univ, Ctr Adv Luminescence Mat, Kowloon Tong, Hong Kong, Peoples R China 3.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 4.Hong Kong Univ Sci & Technol, Dept Chem, Hong Kong, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Guijiang,Wang, Qi,Ho, Cheuk-Lam,et al. Robust Tris-Cyclometalated Iridium(III) Phosphors with Ligands for Effective Charge Carrier Injection/Transport: Synthesis, Redox, Photophysical, and Electrophosphorescent Behavior[J]. CHEMISTRY-AN ASIAN JOURNAL,2008,3(10):1830-1841. |
| APA | Zhou, Guijiang.,Wang, Qi.,Ho, Cheuk-Lam.,Wong, Wai-Yeung.,Ma, Dongge.,...&Lin, Zhenyang.(2008).Robust Tris-Cyclometalated Iridium(III) Phosphors with Ligands for Effective Charge Carrier Injection/Transport: Synthesis, Redox, Photophysical, and Electrophosphorescent Behavior.CHEMISTRY-AN ASIAN JOURNAL,3(10),1830-1841. |
| MLA | Zhou, Guijiang,et al."Robust Tris-Cyclometalated Iridium(III) Phosphors with Ligands for Effective Charge Carrier Injection/Transport: Synthesis, Redox, Photophysical, and Electrophosphorescent Behavior".CHEMISTRY-AN ASIAN JOURNAL 3.10(2008):1830-1841. |
入库方式： OAI收割
来源：化学研究所
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