Efficient solution-processed blue phosphorescent organic light-emitting diodes with halogen-free solvent to optimize the emissive layer morphology
文献类型：期刊论文
| 作者 | Liu, Lihui1,2; Liu, Xuejing1,2; Wu, Keqi1,2; Ding, Junqiao1; Zhang, Baohua1; Xie, Zhiyuan1; Wang, Lixiang1 |
| 刊名 | ORGANIC ELECTRONICS
 |
| 出版日期 | 2014-07-01 |
| 卷号 | 15期号:7页码:1401-1406 |
| 关键词 | Organic Light-emitting Diodes Solution Process Halogen-free Solvent Film Morphology |
| ISSN号 | 1566-1199 |
| DOI | 10.1016/j.orgel.2014.04.005 |
| 英文摘要 | Efficient solution-processed blue phosphorescent organic light-emitting diodes (OLEDs) featuring with halogen-free solvent processing are fabricated in this study. The organic molecule 3,6-bis(diphenylphosphoryl)-9-(4 '-(diphenylphosphoryl) phenyl)-carbazole (TPCz) that possesses good solubility in halogen-free polar solvents is selected to serve as the host of blue phosphorescent iridium(III) [bis(4,6-difluorophenyl)-pyridinato-N,C-2]-picolinate (FIrpic) dopant. The morphology of the TPCz: FIrpic emissive layer prepared with different polar solvents including chlorobenzene (CB), n-butanol (ButA) and isopropanol (IPA) and the effect on their electroluminescent performance have been investigated in detail. It is found that the more polar halogen-free solvent IPA restrains the FIrpic aggregation and renders a more densely packed emissive layer as compared to the CB-processed counterpart, which results in the enhanced electroluminescent performance. The luminous efficiency and power efficiency of the blue phosphorescent OLEDs prepared with CB are merely 5.7 cd/A and 3.3 lm/W, respectively. When using more polar halogen-free solvent IPA, the efficiencies are enhanced to 22.3 cd/A and 15.6 lm/W, about 2.9 and 3.7-time increment, respectively. This work provides an approach to fabricate efficient solution-processed phosphorescent OLEDs with environmental-friendly solvents, which is highly required in large-scale solution-processed manufacturing. (C) 2014 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000336543500013 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/51961]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhang, Baohua |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Lihui,Liu, Xuejing,Wu, Keqi,et al. Efficient solution-processed blue phosphorescent organic light-emitting diodes with halogen-free solvent to optimize the emissive layer morphology[J]. ORGANIC ELECTRONICS,2014,15(7):1401-1406. |
| APA | Liu, Lihui.,Liu, Xuejing.,Wu, Keqi.,Ding, Junqiao.,Zhang, Baohua.,...&Wang, Lixiang.(2014).Efficient solution-processed blue phosphorescent organic light-emitting diodes with halogen-free solvent to optimize the emissive layer morphology.ORGANIC ELECTRONICS,15(7),1401-1406. |
| MLA | Liu, Lihui,et al."Efficient solution-processed blue phosphorescent organic light-emitting diodes with halogen-free solvent to optimize the emissive layer morphology".ORGANIC ELECTRONICS 15.7(2014):1401-1406. |
入库方式： OAI收割
来源：化学研究所
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