Carbazole-based polysiloxane hosts for highly efficient solution-processed blue electrophosphorescent devices
文献类型：期刊论文
| 作者 | Sun, Dianming1; Fu, Qiang2; Ren, Zhongjie1; Li, Wei3; Li, Huihui1; Ma, Dongge2; Yan, Shouke1 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY C
 |
| 出版日期 | 2013 |
| 卷号 | 1期号:34页码:5344-5350 |
| ISSN号 | 2050-7526 |
| DOI | 10.1039/c3tc31108b |
| 英文摘要 | The efficient host materials containing carbazole moieties linked to the backbone of polysiloxane through a phenyl bridge have been synthesized and characterized. They exhibit good film forming ability, high thermal decomposition temperatures and suitable glass transition temperatures, so as to form stable amorphous states. Moreover, the silicon-oxygen linkage disrupts their conjugation and results in a sufficiently high triplet energy level (3.0 eV). Iridium bis(4,6-difluorophenyl)pyridinato-N,C-2 picolinate (FIrpic)-based devices using them as hosts show good overall performance with low efficiency roll-off. The device using PCzMSi as the host demonstrates the best performance with a maximum current efficiency of 22.8 cd A(-1), a maximum power efficiency of 9.4 lm W-1 and a maximum external quantum efficiency of 11.9% at a practical luminance of 1165 cd m(-2). Even at a brightness of 5000 cd m(-2) level, the external quantum efficiency (EQE) still remains as high as 10%, suggesting a gentle roll-off of device efficiency at high current density. In addition, typically, the host PCzMSi film displays good mechanical performance by a nanoindentation technique to meet the practical application. These results demonstrate that the design of polysiloxane-based host materials is a promising approach to realize high performance solution-processed blue phosphorescent polymer light emitting diodes (PhPLEDs). |
| 语种 | 英语 |
| WOS记录号 | WOS:000322911900022 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/46883]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yan, Shouke |
| 作者单位 | 1.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 3.Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England |
| 推荐引用方式 GB/T 7714 | Sun, Dianming,Fu, Qiang,Ren, Zhongjie,et al. Carbazole-based polysiloxane hosts for highly efficient solution-processed blue electrophosphorescent devices[J]. JOURNAL OF MATERIALS CHEMISTRY C,2013,1(34):5344-5350. |
| APA | Sun, Dianming.,Fu, Qiang.,Ren, Zhongjie.,Li, Wei.,Li, Huihui.,...&Yan, Shouke.(2013).Carbazole-based polysiloxane hosts for highly efficient solution-processed blue electrophosphorescent devices.JOURNAL OF MATERIALS CHEMISTRY C,1(34),5344-5350. |
| MLA | Sun, Dianming,et al."Carbazole-based polysiloxane hosts for highly efficient solution-processed blue electrophosphorescent devices".JOURNAL OF MATERIALS CHEMISTRY C 1.34(2013):5344-5350. |
入库方式： OAI收割
来源：化学研究所
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